ultroneously
spontaneously
crack
semispontaneous
unstudiedly
autogenously
in a flash
intuitive
autoactive
break into
spontaneity
on the hop
spur-of-the-moment
automatism
unripely
off-the-cuff
instantaneousness
nonspontaneous
reflex
reflexive
explosively
autoconversion
untimely
in the wink of an eye
run
spontaneousness
caught up
transiently
misabort
instantaneity
unspontaneously
on the fly
flush
dead
unawares
unexpectantly
up and
before one knows it
habit
flash
unplanned
in the twinkling of an eye
abruptedly
break out
noninstantaneous
in the blink of an eye
expontaneous
improvidentially
motility
erupt
abiogenous
nongradual
amuck
out of the blue
amok
just like that
unrestrained
open-ended
instantaneously
rock up
secundum artem
ass over teakettle
twenty-four seven
suddenism
autogeny
constantly
autosensing
stop dead
autocomplete
insta-
stall
unforcedly
instinctive
morning, noon and night
headlong
unvolitioned
nonpermanently
ex tempore
processively
by chance
spring
fleetingly
all at once
impermanent
like that
unscripted
eternally
intermittency
superinstantaneous
instanter
start
startle
sharp
fall
jump
semispontaneous
intuitive
autoactive
spur-of-the-moment
off-the-cuff
nonspontaneous
reflex
reflexive
flash
unplanned
noninstantaneous
expontaneous
abiogenous
nongradual
unrestrained
open-ended
autosensing
instinctive
unvolitioned
impermanent
unscripted
superinstantaneous
sharp
ultroneously
spontaneously
unstudiedly
autogenously
unripely
explosively
untimely
in the wink of an eye
transiently
unspontaneously
on the fly
flush
dead
unawares
unexpectantly
up and
abruptedly
improvidentially
amuck
amok
just like that
instantaneously
secundum artem
ass over teakettle
twenty-four seven
constantly
unforcedly
morning, noon and night
headlong
nonpermanently
ex tempore
processively
fleetingly
all at once
eternally
instanter
spontaneity
automatism
instantaneousness
autoconversion
spontaneousness
instantaneity
habit
motility
suddenism
autogeny
intermittency
start
startle
jump
crack
break into
run
caught up
misabort
break out
erupt
rock up
stop dead
autocomplete
stall
spring
fall
verb
- tell spontaneously
- become fractured; break or crack on the surface only
- make a very sharp explosive sound
- make a sharp sound
- hit forcefully; deal a hard blow, making a cracking noise
- pass through (a barrier)
- break partially but keep its integrity
- break suddenly and abruptly, as under tension
- gain unauthorized access computers with malicious intentions
- suffer a nervous breakdown
- cause to become cracked
- reduce (petroleum) to a simpler compound by cracking
- break into simpler molecules by means of heat
adj
noun
- a long narrow cleft
- a narrow opening
- a long narrow depression in a surface
- a sudden sharp noise
- a chance to do something
- witty remark
- a blemish resulting from a break without complete separation of the parts
- a purified and potent form of cocaine that is smoked rather than snorted; highly addictive
- a usually brief attempt
- the act of cracking something
noun
- The quality of being spontaneous.
- Spontaneous behaviour.
- The tendency to activity of muscular tissue, including the voluntary muscles, when in a state of healthful vigour and refreshment.
- The tendency to undergo change, characteristic of both animal and vegetable organisms, and not restrained or checked by the environment.
noun
- Acting automatically or involuntarily.
- The power of initiating vital processes from within the cell, organ, or organism, independent of external stimulus.
- A surrealist painting technique whereby one attempts to move the brush, pen etc. without conscious control over it.
- An action performed subconsciously, without any apparent direction from the mind; a thought which appears spontaneously in one's consciousness.
- The doctrine that animals are automata, operating according to mechanical laws.
adj
- Produced automatically by a stimulus.
- Having greater than 180 degrees but less than 360 degrees.
- Illuminated by light reflected from another part of the same picture.
- Bent, turned back or reflected.
verb
noun
- The ancestor word corresponding to a descendant.
- The descendant of an earlier language element, such as a word or phoneme, in a daughter language.
- The descendant of anything from an earlier time, such as a cultural myth.
- An automatic response to a simple stimulus which does not require mental processing.
- Reflection or an image produced by reflection. The light reflected from an illuminated surface to one in shade.
adj
- Producing immediate response, spontaneous.
- Of or resulting from a reflex.
- Referring back to the subject, or having an object equal to the subject.
- Of a relation R on a set S, such that xRx for all members x of S (that is, the relation holds between any element of the set and itself).
- Synonym of reflective
noun
verb
- occur persistently
- move fast by using one's feet, with one foot off the ground at any given time
- flee; take to one's heels; cut and run
- stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point
- direct or control; projects, businesses, etc.
- have a particular form
- move along, of liquids
- perform as expected when applied
- change or be different within limits
- run, stand, or compete for an office or a position
- cause to emit recorded audio or video
- move about freely and without restraint, or act as if running around in an uncontrolled way
- have a tendency or disposition to do or be something; be inclined
- be operating, running or functioning
- change from one state to another
- cause to perform
- be affected by; be subjected to
- continue to exist
- carry out a process or program, as on a computer or a machine
- include as the content; broadcast or publicize
- conduct to completion
- pass over, across, or through
- cause something to pass or lead somewhere
- make without a miss
- deal in illegally, such as arms or liquor
- cause an animal to move fast
- be diffused
- sail before the wind
- cover by running; run a certain distance
- extend or continue for a certain period of time
- set animals loose to graze
- keep company
- run with the ball; in such sports as football
- travel rapidly, by any (unspecified) means
- travel a route regularly
- pursue for food or sport (as of wild animals)
- compete in a race
- progress by being changed
- reduce or cause to be reduced from a solid to a liquid state, usually by heating
- come unraveled or undone as if by snagging
- become undone
noun
- a score in baseball made by a runner touching all four bases safely
- the act of testing something
- a race run on foot
- an unbroken series of events
- (American football) a play in which a player attempts to carry the ball through or past the opposing team
- a regular trip
- the act of running; traveling on foot at a fast pace
- the continuous period of time during which something (a machine or a factory) operates or continues in operation
- unrestricted freedom to use
- the production achieved during a continuous period of operation (of a machine or factory etc.)
- a small stream
- a race between candidates for elective office
- a row of unravelled stitches
- the pouring forth of a fluid
- an unbroken chronological sequence
- a short trip
adv
noun
- The process of clearing the contents of a buffer or cache.
- A hand consisting of all cards with the same suit.
- A sudden flowing; a rush which fills or overflows, as of water for cleansing purposes.
- A suffusion of the face with blood, as from fear, shame, modesty, or intensity of feeling of any kind; a blush; a glow.
- Particularly, such a cleansing of a toilet.
- Any tinge of red colour like that produced on the cheeks by a sudden rush of blood.
- A group of birds that have suddenly started up from undergrowth, trees, etc.
- A sudden flood or rush of feeling; a thrill of excitement, animation, etc.
adj
- Wealthy or well off.
- Smooth, even, aligned; not sticking out.
- Full of vigour; fresh; glowing; bright.
- Affluent; abounding; well furnished or suppled; hence, liberal; prodigal.
verb
- To cause to be full; to flood; to overflow; to overwhelm with water.
- To operate a placer mine, where the continuous supply of water is insufficient, by holding back the water, and releasing it periodically in a flood.
- To take suddenly to flight, especially from cover.
- To fill in (joints); to point the level; to make them flush.
- To cleanse by flooding with generous quantities of a fluid.
- To dispose or be disposed of by flushing down a toilet
- To be cleansed by being flooded with generous quantities of water.
- To flow and spread suddenly; to rush.
- To clear (a buffer or cache) of its contents.
- To fill underground spaces, especially in coal mines, with material carried by water, which, after drainage, constitutes a compact mass.
- To cause to blush.
- To cause to take flight from concealment.
- Particularly, to cleanse a toilet by introducing a large amount of water.
- To write (the data) to primary storage, clearing it from the buffer or cache.
- To show red; to shine suddenly; to glow.
- To excite, inflame.
- To become suffused with reddish color due to embarrassment, excitement, overheating, or other systemic disturbance, to blush.
adv
verb
- To make dead; to deaden; to deprive of life, force, or vigour.
- To kill.
- To prevent by disabling; stop.
noun
- (usually in the plural) Sterile mining waste, often present as many large rocks stacked inside the workings.
- Time when coldness, darkness, or stillness is most intense.
adj
- Doomed; marked for death; as good as dead (literally or as a hyperbole).
- Completely inactive; currently without power; without a signal; not live.
- Full and complete (usually applied to nouns involving lack of motion, sound, activity, or other signs of life).
- Constructed so as not to reflect or transmit sound; soundless; anechoic.
- Broken or inoperable.
- Not imparting motion or power by design.
- Not in play.
- Lying so near the hole that the player is certain to hole it in the next stroke.
- Unable to emit power, being discharged (flat) or faulty.
- Cut off from the rights of a citizen; deprived of the power of enjoying the rights of property.
- Tagged out.
- So hated or offensive as to be absolutely shunned, ignored or ostracized.
- Without interest to one of the senses; dull; flat.
- Stationary; static; immobile or immovable.
- Without emotion; impassive.
- Figuratively, not alive; lacking life.
- No longer living; (usually only when referring to people) deceased. (Also used as a noun.)
- Unproductive; fallow.
- Experiencing pins and needles (paresthesia).
- Indifferent to; having no obligation toward; no longer subject to or ruled by (sin, guilt, pleasure, etc).
- Devoid of living things; barren.
- No longer used or required.
- Exact; on the dot.
adv
adj
- Occurring very rapidly, almost instantaneously.
- Expensive-looking and demanding attention; stylish; showy.
- Having plenty of ready money.
- Liable to show off expensive possessions or money.
noun
- A language, created by a minority to maintain cultural identity, that cannot be understood by the ruling class.
- The strips of bright cloth or buttons worn around the collars of market traders.
- A pool.
- Pizzazz, razzle-dazzle.
- Material left around the edge of a moulded part at the parting line of the mould.
- A sudden, short, temporary burst of light.
- The (intentional or unintentional) exposure of an intimate body part or undergarment in public.
- Any of various lycaenid butterflies of the genera Artipe, Deudorix and Rapala.
- A reservoir and sluiceway beside a navigable stream, just above a shoal, so that the stream may pour in water as boats pass, and thus bear them over the shoal.
- A brief exposure or making visible (of a smile, badge, etc).
- A form of military insignia.
- A pattern where each prop is thrown and caught only once.
- A flashlight; an electric torch.
- The sudden sensation of being "high" after taking a recreational drug.
- A very short amount of time.
- A tattoo flash (example design on paper to give an idea of a possible tattoo).
- A sudden and brilliant burst, as of genius or wit.
verb
- To blink; to shine or illuminate intermittently.
- To flaunt; to display in a showy manner.
- To cover with a thin layer, as objects of glass with glass of a different colour.
- To burst out into violence.
- To send by some startling or sudden means.
- To release the pressure from a pressurized vessel.
- To evaporate suddenly. (See flash evaporation.)
- To expand (blown glass) into a disc.
- To move, or cause to move, suddenly.
- To telephone a person, only allowing the phone to ring once, in order to request a call back.
- To expose one's intimate body part or piece of clothing, often momentarily. (Contrast streak.)
- To write to the memory of (an updatable component such as a BIOS chip or games cartridge).
- To cause to shine briefly or intermittently.
- To perform a flash.
- To be visible briefly.
- To climb (a route) successfully on the first attempt.
- To make visible briefly.
- To break forth like a sudden flood of light; to show a momentary brilliance.
- To communicate quickly.
verb
- To begin suddenly; to emerge in a certain condition.
- To bring out from storage, use, or present.
- To rescue someone or aid their escape as in sense 1
- To take or force out by breaking.
- Of a record: to achieve success.
- To escape, especially forcefully or defiantly. Notionally, to escape by breaking.
- To separate from a bundle.
- To suddenly get pimples or a rash, especially on one's face.
prep_phrase
adv
prep_phrase
verb
prefix
verb
- To stop suddenly.
- To put (an animal, etc.) in a stall.
- To fatten.
- To cause to exceed the critical angle of attack, resulting in loss of lift.
- To forestall; to anticipate.
- To place in an office with the customary formalities; to install.
- To employ delaying tactics; to stall for time.
- To keep close; to keep secret.
- To cause to stop making progress; to hinder; to slow down; to delay or forestall.
- To plunge into mire or snow so as not to be able to get on; to set; to fix.
- To cause the engine of a manual-transmission car or truck to stop by going too slowly for the selected gear.
- To come to a standstill.
- To exceed the critical angle of attack, resulting in loss of lift.
- To employ delaying tactics against.
noun
- A church office that entitles the incumbent to the use of a church stall.
- A sheath to protect the finger.
- A compartment for a single animal in a stable or cattle shed.
- Loss of lift due to an airfoil's critical angle of attack being exceeded, normally occurring due to low airspeed.
- An Heathen altar, typically an indoor one, as contrasted with a more substantial outdoor harrow.
- A seat in a theatre close to and (about) level with the stage; traditionally, a seat with arms, or otherwise partly enclosed, as distinguished from the benches, sofas, etc.
- A small open-fronted shop, for example in a market, food court, etc.
- A stable; a place for cattle.
- A bench or table on which small articles of merchandise are exposed for sale.
- A seat in a church, especially one next to the chancel or choir, reserved for church officials and dignitaries.
- The space left by excavation between pillars.
- A very small room used for a shower or a toilet.
- A parking stall; a space for a vehicle in a parking lot or parkade.
- An action that is intended to cause, or actually causes, delay.
adj
adv
verb
- develop suddenly
- move forward by leaps and bounds
- develop into a distinctive entity
- spring back; spring away from an impact
- produce or disclose suddenly or unexpectedly
noun
- the season of growth; spring; the beginning of spring
- a metal elastic device that returns to its shape or position when pushed or pulled or pressed
- a natural flow of ground water
- a point at which water issues forth
- the elasticity of something that can be stretched and returns to its original length
- a light, self-propelled movement upwards or forwards
noun
- a sudden involuntary movement
- the beginning of anything
- the time at which something is supposed to begin
- a turn to be a starter (in a game at the beginning)
- the act of starting something
- a line indicating the location of the start of a race or a game
- a signal to begin (as in a race)
- the advantage gained by beginning early (as in a race)
verb
- take the first step or steps in carrying out an action
- set in motion, cause to start
- depart for someplace
- have a beginning, in a temporal, spatial, or evaluative sense
- bring into being
- get off the ground
- move or jump suddenly, as if in surprise or alarm
- get going or set in motion
- begin or set in motion
- begin work or acting in a certain capacity, office or job
- play in the starting lineup
- have a beginning characterized in some specified way
- begin an event that is implied and limited by the nature or inherent function of the direct object
- bulge outward
adj
- very sudden and in great amount or degree
- (of something seen or heard) clearly defined
- ending in a sharp point
- having or demonstrating ability to recognize or draw fine distinctions
- marked by practical hardheaded intelligence
- harsh
- having or emitting a high-pitched and sharp tone or tones
- dangerously steep
- quick and forceful
adv
noun
- a musical notation indicating one half step higher than the note named
- a long thin sewing needle with a sharp point
adj
verb
- pass suddenly and passively into a state of body or mind
- descend in free fall under the influence of gravity
- move downward and lower, but not necessarily all the way
- come under, be classified or included
- fall from clouds
- suffer defeat, failure, or ruin
- die, as in battle or in a hunt
- touch or seem as if touching visually or audibly
- be captured
- occur at a specified time or place
- decrease in size, extent, or range
- yield to temptation or sin
- lose office or power
- to be given by assignment or distribution
- move in a specified direction
- be due
- lose one's chastity
- to be given by right or inheritance
- come into the possession of
- fall to somebody by assignment or lot; passed
- be inherited by
- slope downward
- lose an upright position suddenly
- drop oneself to a lower or less erect position
- fall or flow in a certain way
- assume a disappointed or sad expression
- be cast down
- come out; issue
- be born, used chiefly of lambs
- begin vigorously
- go as if by falling
- come as if by falling
noun
- the season when the leaves fall from the trees
- a sudden drop from an upright position
- a downward slope or bend
- a lapse into sin; a loss of innocence or of chastity
- a sudden decline in strength or number or importance
- a movement downward
- the act of surrendering (usually under agreed conditions)
- the time of day immediately following sunset
- when a wrestler's shoulders are forced to the mat
- a free and rapid descent by the force of gravity
- a sudden sharp decrease in some quantity
noun
- a sudden involuntary movement
- a sudden and decisive increase
- an abrupt transition
- (film) an abrupt transition from one scene to another
- descent with a parachute
- the act of jumping; propelling yourself off the ground
verb
- move forward by leaps and bounds
- move or jump suddenly, as if in surprise or alarm
- make a sudden physical attack on
- increase suddenly and significantly
- be highly noticeable
- enter eagerly into
- rise in rank or status
- jump down from an elevated point
- run off or leave the rails
- jump from an airplane and descend with a parachute
- cause to jump or leap
- start (a car engine whose battery is dead) by connecting it to another car's battery
- bypass
- pass abruptly from one state or topic to another
- go back and forth; swing back and forth between two states or conditions
English words for 'spontaneously'
As you may have noticed, above you will find words for "spontaneously". Hover the mouse over the word you'd like to know more about to view its definition. Click 
to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.
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pressurized water reactor
to dumb down.
with a gulp
semantics
overactivity
indiscriminate.
crating
blessed rain
preparatory course
shop used for testing sales of new products
physical chemistry
zone melting
large store
horizontal plane
antisubmarine
birdcall
to slip through
to fluster
along the southern coast
Incapable of being educated
nerdy.
shutting down
associated with the striate body
short of hands
reasonableness.
AU
bit density
to advance.
viewer
strikeout
to haggle
knapsack
stiffening
to pardon
pulp
detergent
year end
lasciviousness
to rack one's brains
to warn
incontinence
chaser
national holiday
sonorous
approximation
first-class
animation
fascination
twisted
to rise