unfathomable
crack through
cut
break through
come through
dense
enter into
penetrable
anal
penetrating
impenetrate
honeycomb
penetrative
penetrator
repenetrate
unpenetrating
sandwich
screw
drive in
adamant
bottom for
penetratingly
infiltrate
perforate
penetratively
penetratingness
intrant
squeeze under
nonpenetration
sticky
pierce
lightning in a bottle
interpenetrant
gross
infiltratable
ungetatable
un-come-at-able
unmusterable
exploration
keenly
un-get-at-able
snorter
acutely
tall
tricky
catchy
cage
transcavitary
incessive
cage in
intravaginal
double-team
overchallenge
toughness
slip it to
box
dys-
stretch
dick down
intracavitary
mean
corner
nasal
overpenetration
penetration
blunt
incave
nonpenetrated
pen test
tight
kill
penetrantly
tough-skinned
unpenetrated
piercing
hard going
superdifficult
coon
clamber
fiendish
mountainous
boring
get into trouble
unbreachable
holk
unharnessable
harder than Chinese math
nonpenetrating
murderous
fragile
hard as Chinese algebra
unencumberable
crawlable
strike
ream
bitch
Lucky Pierre
unfathomable
dense
penetrable
penetrating
penetrative
unpenetrating
adamant
intrant
sticky
interpenetrant
gross
infiltratable
ungetatable
un-come-at-able
unmusterable
un-get-at-able
tall
tricky
catchy
transcavitary
incessive
intravaginal
intracavitary
mean
nasal
blunt
nonpenetrated
tight
tough-skinned
unpenetrated
piercing
superdifficult
fiendish
mountainous
boring
unbreachable
unharnessable
harder than Chinese math
nonpenetrating
murderous
fragile
hard as Chinese algebra
unencumberable
crawlable
penetratingly
penetratively
keenly
acutely
penetrantly
penetrator
penetratingness
nonpenetration
lightning in a bottle
exploration
snorter
overchallenge
toughness
box
corner
overpenetration
penetration
pen test
bitch
Lucky Pierre
crack through
cut
break through
come through
enter into
anal
impenetrate
honeycomb
repenetrate
sandwich
screw
drive in
bottom for
infiltrate
perforate
squeeze under
pierce
cage
cage in
double-team
slip it to
stretch
dick down
incave
kill
coon
clamber
get into trouble
holk
strike
ream
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)
adj
- with parts removed
- (of a male animal) having the testicles removed
- (used of rates or prices) reduced usually sharply
- mixed with water
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
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
noun
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.
verb
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
verb
- To cause to penetrate in this way.
- To surreptitiously penetrate, enter or gain access to.
- To invade or penetrate a tissue or organ.
- 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
- 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
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
noun
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
- To pull tight.
- To get more use than expected from a limited resource.
- To make great demands on the capacity or resources of something.
- To lengthen when pulled.
- To lengthen by pulling.
- To extend one’s limbs or another part of the body in order to improve the elasticity of one's muscles
- To extend to a limit point
- To sail by the wind under press of canvas.
- To make inaccurate by exaggeration.
- To increase.
- To extend physically, especially from limit point to limit point.
noun
- The ability to lengthen when pulled.
- An act of stretching.
- A jail or prison term.
- Term of address for a tall person.
- A segment of a journey or route.
- A length of time.
- Extended daylight hours, especially said of the evening in springtime when compared to the shorter winter days.
- The period of the season between the trade deadline and the beginning of the playoffs.
- A stretch limousine.
- The homestretch, the final straight section of the track leading to the finish.
- A jail or prison term of one year's duration.
- A course of thought which diverts from straightforward logic, or requires extraordinary belief or exaggeration.
- A segment or length of material.
- A long reach in the direction of the ball with a foot remaining on the base by a first baseman in order to catch the ball sooner.
- A single uninterrupted sitting; a turn.
- A quick pitching delivery used when runners are on base where the pitcher slides his leg instead of lifting it.
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).
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
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
noun
- The act of penetrating something.
- Specifically, the insertion of the penis (or similar object) during sexual intercourse.
- The act of penetrating a given situation with the mind or faculties; perception, discernment.
- A number or fraction that represents how many cards/decks will be dealt before shuffling, in contrast to the total number of cards/decks in play.
- The proportion of the target audience who buy the advertised product or service.
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
verb
adj
noun
adj
- set so close together as to be invulnerable to penetration
- pulled or drawn tight
- pressed tightly together
- (used of persons or behavior) characterized by or indicative of lack of generosity
- affected by scarcity and expensive to borrow
- of textiles
- securely or solidly fixed in place; rigid
- (of a contest or contestants) evenly matched
- very drunk
- exasperatingly difficult to handle or circumvent
- demanding strict attention to rules and procedures
- packed closely together
adv
adj
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
adj
adj
verb
- To traverse by crawling, as a ledge.
- To crawl while straddling, especially in crossing a creek.
- To fish by noodling, by feeling for large fish in underwater holes.
- To play the dated stereotype of a black fool for an audience, particularly including Caucasians.
- To hunt raccoons.
noun
- A member of a colorfully dressed dance troupe in Cape Town during New Year celebrations.
- A black person who "plays the coon"; that is, who plays the dated stereotype of a black fool for an audience, particularly including Caucasians.
- A coonass; a white Acadian French person who lives in the swamps.
- A raccoon.
- A black person.
adj
adj
verb
- pierce with force
- deliver a sharp blow, as with the hand, fist, or weapon
- have an emotional or cognitive impact upon
- hit against; come into sudden contact with
- make a strategic, offensive, assault against an enemy, opponent, or a target
- indicate (a certain time) by striking
- affect or afflict suddenly, usually adversely
- stop work in order to press demands
- touch or seem as if touching visually or audibly
- attain
- produce by manipulating keys or strings of musical instruments
- cause to form (an electric arc) between electrodes of an arc lamp
- find unexpectedly
- produce by ignition or a blow
- remove by erasing or crossing out or as if by drawing a line
- cause to experience suddenly
- drive something violently into a location
- occupy or take on
- disassemble a temporary structure, such as a tent or a theatrical set
- form by stamping, punching, or printing
- smooth with a strickle
- hook by a pull on the line
- arrive at after reckoning, deliberating, and weighing
noun
- a group's refusal to work in protest against low pay or bad work conditions
- an attack that is intended to seize or inflict damage on or destroy an objective
- a gentle blow
- a score in tenpins: knocking down all ten with the first ball
- (baseball) a pitch that the batter swings at and misses, or that the batter hits into foul territory, or that the batter does not swing at but the umpire judges to be in the area over home plate and between the batter's knees and shoulders
- a conspicuous success
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
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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going in one ear and out the other
Final
uvea
to be photographed
AWACS
physical distribution
summer plumage
bright moon
A town in Kenosha County, Wisconsin
a conservative.
colloquium
mindset
to put on record
macromolecule
soapstone
to be chipped
Eagerness
warning.
origin of a fire
used of hair
Of or relating to Bacchus
hyperinflation
vagrancy.
sending a telegram
bootable CDROM
ooh
Disgusting
mawashi
cold (drinking) water
playing (a wind instrument)
personalization
to outdo
regatta
dissolve
signs of rain
Superlative
by means of
transmutation
veil
glazing
don't mention it
to repeat
any derivative of this compound.
intimation
well-being
becoming
sake
cave
to tease
drawing