unfathomable
dense
crack through
penetrable
impenetrate
anal
cut
come through
break through
enter into
sticky
bottom for
unpenetrating
penetrator
infiltrate
nodus
mean
get into trouble
repenetrate
un-get-at-able
mountain to climb
un-come-at-able
penetrative
ungetatable
snorter
penetrating
gross
murderous
mountainous
adamant
superdifficult
hard
fiendish
toughness
uphill
hard as Chinese algebra
harder than Chinese math
intrant
blunt
corner
box
fragile
screw
squeeze under
drive in
Matterhorn
pig
exploration
stumblingblock
testing
unsimpable
ambitious
daunting
tight
honeycomb
nasty
lightning in a bottle
pierce
interpenetrant
catch a cold
arduous
penetratingly
nasal
overchallenge
keenly
prise
slippery
deadpan
acutely
bitch
penetratively
semitough
toughish
dys-
tall
intracavitary
big
hunt down
outstrain
piercing
penetratingness
bamboo
copulable
kill
rod
tightish
pen test
hard going
unmusterable
semihard
sandwich
ream
unharnessable
dick down
megachallenge
hit
slip it to
mellow
unfathomable
dense
penetrable
sticky
unpenetrating
mean
un-get-at-able
un-come-at-able
penetrative
ungetatable
penetrating
gross
murderous
mountainous
adamant
superdifficult
fiendish
hard as Chinese algebra
harder than Chinese math
intrant
blunt
fragile
testing
unsimpable
ambitious
daunting
tight
nasty
interpenetrant
arduous
nasal
slippery
deadpan
semitough
toughish
tall
intracavitary
piercing
copulable
tightish
unmusterable
semihard
unharnessable
mellow
hard
uphill
penetratingly
keenly
acutely
penetratively
big
penetrator
nodus
mountain to climb
snorter
toughness
corner
box
pig
exploration
stumblingblock
lightning in a bottle
overchallenge
bitch
penetratingness
pen test
megachallenge
crack through
impenetrate
anal
cut
come through
break through
enter into
bottom for
infiltrate
get into trouble
repenetrate
screw
squeeze under
drive in
honeycomb
pierce
catch a cold
prise
hunt down
outstrain
bamboo
kill
rod
sandwich
ream
dick down
hit
slip it to
adj
- Thick; difficult to penetrate.
- Opaque; allowing little light to pass through.
- Obscure, or difficult to understand.
- Slow to comprehend; of low intelligence.
- Having relatively high density.
- Compact; crowded together.
- Being a subset of a topological space that approximates the space well. See the Wikipedia article on dense sets for a mathematical definition.
noun
verb
verb
adj
- of, related to, intended for or involving the anus.
- Of a person, compulsive and stubborn, obsessed with neatness and accuracy, supposedly from not having progressed beyond the anal stage.
- Of the stage in psychosexual development when the child's interest is alleged to be concentrated on the anal region.
- Proximate to the thorax.
noun
verb
- penetrate injuriously
- separate with or as if with an instrument
- cut down on; make a reduction in
- turn sharply; change direction abruptly
- make an incision or separation
- discharge from a group
- form by probing, penetrating, or digging
- style and tailor in a certain fashion
- hit (a ball) with a spin so that it turns in the opposite direction
- make out and issue
- cut and assemble the components of
- intentionally fail to attend
- be able to manage or manage successfully
- give the appearance or impression of
- move (one's fist)
- pass directly and often in haste
- pass through or across
- make an abrupt change of image or sound
- stop filming
- make a recording of
- record a performance on (a medium)
- create by duplicating data
- form or shape by cutting or incising
- perform or carry out
- function as a cutting instrument
- allow incision or separation
- divide a deck of cards at random into two parts to make selection difficult
- cause to stop operating by disengaging a switch
- reap or harvest
- fell by sawing; hew
- refuse to acknowledge
- shorten as if by severing the edges or ends of
- weed out unwanted or unnecessary things
- dissolve by breaking down the fat of
- have a reducing effect
- cease, stop
- reduce in scope while retaining essential elements
- lessen the strength or flavor of a solution or mixture
- have grow through the gums
- grow through the gums
- cut off the testicles (of male animals such as horses)
noun
- a share of the profits
- (film) an immediate transition from one shot to the next
- a trench resembling a furrow that was made by erosion or excavation
- a step on some scale
- a wound made by cutting
- a piece of meat that has been cut from an animal carcass
- a remark capable of wounding mentally
- a distinct selection of music from a recording or a compact disc
- the omission that is made when an editorial change shortens a written passage
- the style in which a garment is cut
- a canal made by erosion or excavation
- a refusal to recognize someone you know
- in baseball; a batter's attempt to hit a pitched ball
- (sports) a stroke that puts reverse spin on the ball
- the division of a deck of cards before dealing
- the act of penetrating or opening open with a sharp edge
- the act of cutting something into parts
- the act of shortening something by chopping off the ends
- the act of reducing the amount or number
- an unexcused absence from class
adj
- separated into parts or laid open or penetrated with a sharp edge or instrument
- fashioned or shaped by cutting
- made neat and tidy by trimming
- (used of grass or vegetation) cut down with a hand implement or machine
- (of pages of a book) having the folds of the leaves trimmed or slit
adj
adj
- Potentially difficult to escape from.
- Tending to stay the same; resistant to change.
- Of weather, hot and windless and with high humidity, so that people feel sticky from sweating.
- Resembling or characteristic of a stick.
- Able or likely to adhere via the drying of a viscous substance.
- Persistent.
- Appearing on all virtual desktops.
- Fixed at the top of the list of topics or threads so as to keep it in view.
- Compelling enough to keep visitors from leaving.
verb
noun
verb
- To cause to penetrate in this way.
- To invade or penetrate a tissue or organ.
- To surreptitiously penetrate, enter or gain access to.
- To send (soldiers, spies, etc.) through gaps in the enemy line.
- To pass through something by filtration.
- To move from a vein, remaining in the body.
- To cause (a liquid) to pass through something by filtration.
noun
adj
- Difficult, tricky.
- Intending to cause harm, successfully or otherwise; bearing ill will towards another.
- Low in quality or degree; inferior; poor; shabby.
- Having the mean (see noun below) as its value; average.
- Disobliging; pettily offensive or unaccommodating.
- Ungenerous; stingy; tight-fisted.
- Accomplished with great skill; deft; hard to compete with.
- Of a common or low origin, grade, or quality; common; humble.
- Of little value or worth; worthy of little or no regard; contemptible; despicable.
- Powerful; fierce; strong.
- Without dignity of mind; destitute of honour; low-minded; spiritless; base.
noun
- The middle part of three-part polyphonic music; now specifically, the alto part in polyphonic music; an alto instrument.
- Something which is intermediate or in the middle; an intermediate value or range of values; a medium.
- The average of a set of values, calculated by summing them together and dividing by the number of terms; the arithmetic mean.
- Any function of multiple variables that satisfies certain properties and yields a number representative of its arguments; or, the number so yielded; a measure of central tendency.
- Either of the two numbers in the middle of a conventionally presented proportion, as 2 and 3 in 1:2=3:6.
- A method or course of action used to achieve some result.
verb
- To be of some level of importance.
- To have as intentions of a given kind.
- To intend an ensuing comment or statement as an explanation.https://www.lexico.com/en/definition/i_mean%20I%20mean
- To cause or produce (a given result); to bring about (a given result).
- Of a word, symbol etc: to have reference to, to signify.
- To have conviction in (something said or expressed); to be sincere in (what one says).
- Of a person (or animal etc): to intend to express, to imply, to hint at, to allude.
- To intend (something) for a given purpose or fate; to predestine.
- To intend, to plan (to do); to have as one's intention.
- To lament.
- To convey (a given sense); to signify, or indicate (an object or idea).
verb
adj
- Difficult or impossible to see through.
- Lacking refinement; not of high quality.
- Lacking refinement in behaviour or manner; offending a standard of morality.
- Heavy in proportion to one's height; having a lot of excess flesh.
- Highly or conspicuously offensive.
- Seen without a microscope (usually for a tissue or an organ); at a large scale; not detailed.
- Excluding any deductions; including all associated amounts.
- Causing disgust.
verb
noun
adj
adv
noun
- Crack cocaine.
- A tyre whose compound is softer than superhards, and harder than mediums.
- Hard labor.
- A firm or paved beach or slope convenient for hauling vessels out of the water.
adj
- In a physical form, not digital.
- Having a high energy (high frequency; short wavelength).
- Of silk: not having had the natural gum boiled off.
- Having a comparatively larger or a ninety-degree angle.
- Containing alcohol.
- Having disagreeable and abrupt contrasts in colour or shading.
- Made up of parallel rays, producing clearly defined shadows.
- Strong.
- Sexually aroused; having an erect penis.
- Difficult or requiring a lot of effort to do, understand, experience, or deal with.
- Severe, harsh, unfriendly, brutal.
- Unquestionable, unequivocal.
- Rigid in the drawing or distribution of the figures; formal; lacking grace of composition.
- Tough and muscular.
- High in dissolved chemical salts, especially those of calcium.
- Having the capability of being a permanent magnet by being a material with high magnetic coercivity (compare soft).
- Demanding a lot of effort to endure.
- Far, extreme.
- Velarized or plain, rather than palatalized.
- Of a market: having more demand than supply; being a seller's market.
- Using a manual or physical process, not by means of a software command.
- Hardened; having unusually strong defences.
- Having muscles that are tightened as a result of intense, regular exercise.
- Resistant to pressure.
- hardcore
- Plosive.
- Unvoiced.
adj
adj
- Hard to impress or penetrate.
- Having a thick edge or point; not sharp.
- Abrupt in address; plain; unceremonious; wanting the forms of civility; rough in manners or speech.
- Dull in understanding; slow of discernment; opposed to acute.
- Slow or deficient in feeling: insensitive.
verb
- To dull the edge or point of, by making it thicker; to make blunt.
- To repress or weaken; to impair the force, keenness, or susceptibility, of
noun
noun
- a predicament from which a skillful or graceful escape is impossible
- a place off to the side of an area
- the point where two lines meet or intersect
- an interior angle formed by two meeting walls
- the intersection of two streets
- the point where three areas or surfaces meet or intersect
- a small concavity
- a temporary monopoly on a kind of commercial trade
- a projecting part where two sides or edges meet
- a remote area
- (architecture) solid exterior angle of a building; especially one formed by a cornerstone
verb
noun
- a predicament from which a skillful or graceful escape is impossible
- a (usually rectangular) container; may have a lid
- private area in a theater or grandstand where a small group can watch the performance
- the quantity contained in a box
- a rectangular drawing
- evergreen shrubs or small trees
- any one of several designated areas on a ball field where the batter or catcher or coaches are positioned
- the driver's seat on a coach
- separate partitioned area in a public place for a few people
- a blow with the hand (usually on the ear)
verb
verb
- cause to penetrate, as with a circular motion
- have sexual intercourse with
- turn like a screw
- tighten or fasten by means of screwing motions
- defeat someone through trickery or deceit
noun
- someone who guards prisoners
- a simple machine of the inclined-plane type consisting of a spirally threaded cylindrical rod that engages with a similarly threaded hole
- a propeller with several angled blades that rotates to push against water or air
- a fastener with a tapered threaded shank and a slotted head
- slang for sexual intercourse
noun
- A difficult problem.
- Any of several mammalian species of the genus Sus, having cloven hooves, bristles and a nose adapted for digging; especially the domesticated animal Sus domesticus.
- A light pinkish-red colour, like that of a pig (also called pig pink).
- A lead container used for radioactive waste.
- A young swine, a piglet (contrasted with a hog, an adult swine).
- A simple dice game in which players roll the dice as many times as they like, either accumulating a greater score or losing previous points gained.
- The general-purpose M60 machine gun, considered to be heavy and bulky.
- Someone who overeats or eats rapidly and noisily.
- The edible meat of such an animal; pork.
- A dirty or slovenly person.
- A police officer.
- A lecherous or sexist man.
- The mold in which a block of metal is cast.
- A device for cleaning or inspecting the inside of an oil or gas pipeline, or for separating different substances within the pipeline. Named for the pig-like squealing noise made by their progress.
- A very obese person.
- An earthenware hot-water jar to warm a bed; a stone bed warmer
- A block of cast metal.
- earthenware, or an earthenware shard
verb
noun
adj
- Narrow, such that it is difficult for something or someone to pass through it.
- Lacking holes; difficult to penetrate; waterproof.
- Using a strategy which involves playing very few hands.
- Fitting close, or too close, to the body.
- Under high tension; taut.
- Unyielding or firm.
- Of a turn, sharp, so that the timeframe for making it is narrow and following it is difficult.
- Extraordinarily great or special.
- Not conceding many goals.
- Intimate, close, close-knit.
- A car with understeer, primarily used to describe NASCAR stock cars.
- Of a player, who plays very few hands.
- Intimately friendly.
- Angry or irritated.
- Miserly or frugal.
- Firmly held together; compact; not loose or open.
- Well-rehearsed and accurate in execution.
- Intoxicated; drunk or acting like being drunk.
- Mean; unfair; unkind.
- Scarce, hard to come by.
- Limited or restricted.
adv
adj
- Awkward, difficult to navigate; dangerous.
- Spiteful, unkind.
- Grave or dangerous (of an accident, illness etc.).
- Contemptible, unpleasant (of a person).
- Dirty, filthy.
- Indecent or offensive; obscene, lewd.
- Formidable, terrific; wicked.
- Objectionable, unpleasant (of a thing); repellent, offensive.
noun
adj
- Sharp, penetrating.
- Of or pertaining to the nose or to the nasion.
- Having a sound imparted by means of the nose; and specifically, made by lowering the soft palate, in some cases with closure of the oral passage, the voice thus issuing (wholly or partially) through the nose, as in the consonants m, n, ng.
- Characterized by resonance in the nasal passage.
noun
adj
noun
adv
verb
adj
adj
adv
- Hard.
- In a large amount or to a large extent.
- On a large scale, expansively.
- You've got to think big to succeed at Amalgamated Plumbing.
- In a boasting manner.
- In a loud manner.
noun
- The participant in ageplay who acts out the older role.
- An important or powerful person; a celebrity; a big name.
- A initiated member of a sorority who acts as a mentor to a new member (the little).
- One or more kinds of barley, especially six-rowed barley.
- The big leagues, big time.
adj
- Important or significant.
- Mature, conscientious, principled; generous.
- Popular.
- Large with young; pregnant; swelling; ready to give birth or produce.
- Enthusiastic (about).
- Fat.
- Adult; (of a child) older.
- Populous.
- Used as an intensifier, especially of negative-valence nouns
- Of great size, large.
- Operating on a large scale, especially if therefore having undue or sinister influence.
- Well-endowed, possessing large breasts in the case of a woman or a large penis in the case of a man.
- Old, mature. Used to imply that somebody is too old for something, or acting immaturely.
verb
- To penetrate sexually.
- To flog with a bamboo cane.
- To paint (furniture, etc.) to give it the appearance of bamboo.
adj
noun
- A didgeridoo.
- A fast-growing grass of the Bambusoideae subfamily, characterised by its woody, hollow, round, straight, jointed stem.
- The wood of the bamboo plant as a material for building, furniture, etc.
- A stick, rod, pole, or cane of bamboo, especially one used for corporal punishment.
- A member of the British military or British East India Company who spent so much time in Indonesia, India, or Malaysia that they never went back home.
verb
- To sexually penetrate in a skillful way.
- To strike (a ball, etc.) with such force and placement as to make a shot that is impossible to defend against, usually winning a point.
- To cause great pain, discomfort, or distress to; to hurt.
- To punish severely.
- To cause (a ball, etc.) to be out of play, resulting in a stoppage of gameplay.
- To produce intense pain.
- To amaze, exceed, stun, or otherwise incapacitate.
- To put to death; to extinguish the life of.
- To exert oneself to an excessive degree.
- To exert an overwhelming effect on.
- To stop, cease, or render void; to terminate.
- To force a company out of business.
- To deadmelt.
- To render inoperative.
- To succeed with an audience, especially in comedy.
- To produce feelings of dissatisfaction or revulsion in.
- To use up or to waste.
- To cause to assume the value zero.
- To disconnect (a user) involuntarily from the network.
- To overpower, overwhelm, or defeat.
noun
verb
- To penetrate sexually.
- To reinforce concrete with metal rods.
- To hot rod.
- To furnish with rods, especially lightning rods.
noun
- A rod cell: a rod-shaped cell in the eye that is sensitive to light.
- A hot rod, an automobile or other passenger motor vehicle modified to run faster and often with exterior cosmetic alterations, especially one based originally on a pre-1940s model or (currently) denoting any older vehicle thus modified.
- A coupling rod or connecting rod, which links the driving wheels of a steam locomotive, and some diesel shunters and early electric locomotives.
- A long slender usually tapering pole used for angling; fishing rod.
- A straight, round stick, shaft, bar, cane, or staff.
- A straight bar that unites moving parts of a machine, for holding parts together as a connecting rod or for transferring power as a driveshaft.
- Any of a number of long, slender microorganisms.
- An implement held vertically and viewed through an optical surveying instrument such as a transit, used to measure distance in land surveying and construction layout; an engineer's rod, surveyor's rod, surveying rod, leveling rod, ranging rod. The modern (US) engineer's or surveyor's rod commonly is eight or ten feet long and often designed to extend higher. In former times a surveyor's rod often was a single wooden pole or composed of multiple sectioned and socketed pieces, and besides serving as a sighting target was used to measure distance on the ground horizontally, hence for convenience was of one rod or pole in length, that is, 5+¹⁄₂ yards.
- The penis.
- A stirring rod: a glass rod, typically about 6 inches to 1 foot long and ¹⁄₈ to ¹⁄₄ inch in diameter that can be used to stir liquids in flasks or beakers.
- A stick used to measure distance, by using its established length or task-specific temporary marks along its length, or by dint of specific graduated marks.
- An implement resembling and/or supplanting a rod (particularly a cane) that is used for corporal punishment, and metonymically called the rod, regardless of its actual shape and composition.
- A longitudinal pole used for forming part of a framework such as an awning or tent.
- A Cuisenaire rod.
- A stick, pole, or bundle of switches or twigs (such as a birch), used for personal defense or to administer corporal punishment by whipping.
- A pistol; a gun.
- A rod-shaped object that appears in photographs or videos traveling at high speed, not seen by the person recording the event, often associated with extraterrestrial entities.
adj
noun
adj
verb
- To sexually penetrate in a rough and painful way.
- To yell at or berate.
- To enlarge a hole, especially using a reamer; to bore a hole wider.
- To shape or form, especially using a reamer.
- To cream; mantle; foam; froth.
- To remove (material) by reaming.
- To remove burrs and debris from a freshly bored hole.
noun
verb
- To encounter an obstacle or other difficulty.
- To inhale an amount of smoke from a narcotic substance, particularly marijuana.
- To come up to bat.
- To have sex with.
- To attack.
- To affect negatively.
- To strike against something.
- To kill a person, usually on the instructions of a third party.
- To attack, especially amphibiously.
- In blackjack, to deal a card to.
- to work out
- To manage to touch (a target) in the right place.
- To administer a blow to, directly or with a weapon or missile.
- To guess; to light upon or discover.
- To meet or reach what was aimed at or desired; to succeed, often by luck.
- To switch on.
- To affect someone, as if dealing a blow to that person.
- To reach or achieve.
- To use; to connect to.
- (of an exercise) to affect, to work a body part.
- To take up, or replace by a piece belonging to the opposing player; said of a single unprotected piece on a point.
- To briefly visit.
- To come into contact with forcefully and suddenly.
- To activate a button or key by pressing and releasing it.
noun
- The hit was very slight.
- A measured visit to a web site, a request for a single file from a web server.
- A blow; a punch; a striking against; the collision of one body against another; the stroke that touches anything.
- A match found by searching a computer system or search engine
- An approximately correct answer in a test set.
- Something very successful, such as a song, film, or video game, that receives widespread recognition and acclaim.
- An attack on a location, person or people.
- The complete play, when the batter reaches base without the benefit of a walk, error, or fielder’s choice.
- A dose of an illegal or addictive drug.
- A premeditated murder done for criminal or political purposes.
- A move that throws one of the opponent's men back to the entering point.
- A collision of a projectile with the target.
- In the game of Battleship, a correct guess at where one's opponent ship is.
- A game won after the adversary has removed some of his men. It counts for less than a gammon.
pron
adj
adj
- Soft and easily penetrated or worked; not hard or rigid; loamy.
- Pleasantly high or stoned, and relaxed after taking drugs; also, of drugs: slightly intoxicating and tending to produce such effects.
- Fruitful and warm.
- Matured and smooth, and not acidic, harsh, or sharp.
- Pleasing in some way; excellent, fantastic, great.
- Cheerful, genial, jovial, merry; also, easygoing, laid-back, relaxed.
- Soft or tender by reason of ripeness; having a tender pulp.
- Mature; of crops: ready to be harvested; ripe.
- Not coarse, brash, harsh, or rough; delicate, rich, soft, subdued.
- Well-matured from age or experience; not impetuous or impulsive; calm, dignified, gentle.
- Drunk, intoxicated; especially slightly or pleasantly so, or to an extent that makes one cheerful and friendly.
verb
- To cause (food or drink, for example, cheese or wine, or its flavour) to become matured and smooth, and not acidic, harsh, or sharp.
- To reduce or remove the harshness or roughness from (something); to soften, to subdue, to tone down.
- To mature and lose its harshness or sharpness.
- Followed by out: to relax (a person); in particular, to cause (a person) to become pleasantly high or stoned by taking drugs.
- To cause (fruit) to become soft or tender, specifically by ripening.
- To relax; in particular, to become pleasantly high or stoned by taking drugs.
- To be rendered soft and suitable for planting in.
- To cause (a person) to become calmer, gentler, and more understanding, particularly from age or experience.
- To lose harshness; to become gentler, subdued, or toned down.
- To soften (land or soil) and make it suitable for planting in.
- To cause (a person) to become slightly or pleasantly drunk or intoxicated.
noun
English words for 'Difficult to penetrate.'
As you may have noticed, above you will find words for "Difficult to penetrate.". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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re-establishment
roaring with laughter
cut into cubes
very easy
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antagonist
crater
businesslike.
going a long way
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ICBM
exogamy
fields
nerve agent
attention.
to slip through
paper mulberry
fighting with the fists
ectoplasm
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worsening
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spectroscopy
frolicking
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teammate
steering committee (chair)
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bargain goods
to become lost.
lacking variety
paymaster
crops
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flute
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upper part
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flashing
playfulness
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