English words: unspontaneous to unstopper

300 English words, part 70 of 88 of the words starting with U, A to Z. 13 have a page of their own.

English words unspontaneous to unstopper

unspontaneous adjective: Not spontaneous; halting or rehearsed
unspontaneously adverb: In an unspontaneous manner.
unspontaneousness noun: The quality of being unspontaneous.
unspoofable adjective: That cannot be spoofed.
unspoofed adjective: Not spoofed.
unspookable adjective: Unable to be spooked or frightened.
unspooked adjective: Not spooked.
unspooky adjective: Not spooky.
unspool verb: To remove (film, cotton, etc.) from a spool; unwind.
unspooled adjective, verb: Not spooled.
unsported adjective: Not sported.
unsportful adjective: Not sportful.
unsportiness noun: The state or condition of being unsporty.
unsporting adjective: unfair, or not sportsmanlike
unsportingly adverb: In an unsporting way; unfairly.
unsportingness noun: The quality of being unsporting.
unsportive adjective: Not sportive.
unsportsmanlike adjective: Violating the accepted standards of sportsmanship.
unsportsmanlikeness noun: The state or condition of being unsportsmanlike.
unsportsmanliness noun: The state or condition of being unsportsmanly; unsportsmanlikeness.
unsportsmanly adjective: Not sportsmanly; not befitting a sportsman.
unsportswomanlike adjective: Synonym of unsportsmanlike (where the person being discussed is female)
unsporty adjective: Not sporty.
unsporulated adjective: Not sporulated.
unspot verb: To remove spots from.
unspotless adjective: Not spotless; slightly dirty or stained.
unspotlighted adjective: Not spotlighted.
unspottable adjective: That cannot be seen or spotted; invisible.
unspotted adjective, verb: Not having spots.
unspottedly adverb: Without stains; unblemishedly.
unspottedness noun: Absence of stains or blots; freedom from sin.
unspoused adjective: Without a spouse; unmarried.
unspouted adjective: Not furnished with a spout.
unsprained adjective: Not sprained.
unsprayable adjective: Not sprayable.
unsprayed adjective: Not having been sprayed.
unspread adjective, verb: Not spread.
unspreadable adjective: Not spreadable.
unsprightliness noun: The quality of being unsprightly.
unsprightly adjective: Not sprightly.
unspring verb: To release or be released by means of a spring.
unspringed adjective: Without springs.
unspringlike adjective: Not springlike.
unspringy adjective: not springy
unsprinkled adjective: Not having been sprinkled.
unsprinklered adjective: Not fitted with automatic sprinklers for fire prevention.
unsprocketed adjective: Of photographic film: lacking perforations.
unsprouted adjective: ungerminated; without sprouts (of seed)
unsprouting adjective: Not sprouting.
unspruced adjective: Not spruced up.
unsprung adjective, verb: Not sprung.
unspun adjective /ʌnˈspʌn/: Not spun.
unspurious adjective: Not spurious.
unspurned adjective: Not spurned.
unspurred adjective: Lacking spurs.
unsputtered adjective: Not sputtered
unspying adjective: That does not spy.
unsqualid adjective: Not squalid.
unsquandered adjective: Not squandered.
unsquarable adjective: That cannot be squared.
unsquare adjective: Not square.
unsquareable adjective: Alternative spelling of unsquarable.
unsquared adjective: Not squared.
unsquash verb: To reverse a process of squashing; to expand (something) back to the original size.
unsquashable adjective: Unable to be squashed.
unsquashed adjective: Not squashed.
unsquatted adjective: Not occupied by squatters.
unsqueaking adjective: Not producing squeaking noises.
unsqueaky adjective: Not squeaky.
unsqueamish adjective: Not squeamish.
unsqueamishly adverb: In an unsqueamish manner.
unsqueamishness noun: The quality of being unsqueamish.
unsqueezable adjective: That cannot be squeezed.
unsqueeze verb: To reformat (a video image) from 4:3 to 16:9 aspect ratio.
unsqueezed adjective, verb: Not squeezed.
unsquelched adjective /ʌnˈskwɛltʃt/: Not squelched.
unsquinting adjective: Not squinting.
unsquire verb: To strip of the dignity of squire.
unsquirelike adjective: Not squirelike.
unsquirted adjective: Not squirted.
unsquished adjective: Not squished.
Unst proper noun /ʌnst/: An island of the Shetland Islands council area, Scotland, the northernmost in the inhabited British Isles.
unstabbable adjective: Not stabbable.
unstabbed adjective: Not stabbed.
unstabilised adjective: Non-Oxford British English spelling of unstabilized.
unstability noun: Instability.
unstabilizable adjective: Not stabilizable.
unstabilization noun: The process of making something unstable.
unstabilize verb: To make unstable; destabilize.
unstabilized adjective: Not stabilized; potentially unstable.
unstable adjective, verb /ʌnˈsteɪ.bəl/: Not stable.
unstable equilibrium noun: An equilibrium in which a small disturbance causes it to move further away from its original state.
unstabled adjective: Not lodged in a stable.
unstableness noun: The quality of being unstable; instability
unstably adverb: In an unstable manner.
unstack verb: To remove from a stack.
unstackable adjective: Not stackable.
unstacked adjective: Not stacked
unstacker noun: A person or machine that unstacks something.
unstaffed adjective: Without staff, or workers.
unstage verb: To move (a file) out of the staging area (where files are kept in preparation to be committed and deployed).
unstageability noun: The quality of being unstageable.
unstageable adjective: Impossible to perform on a stage.
unstaged adjective, verb: Not formally staged; not presented to an audience on a stage.
unstagedness noun: The state or condition of being unstaged.
unstagey adjective: Alternative form of unstagy.
unstaggered adverb: Not staggered.
unstaggering adjective: Not staggering; steadfast.
unstagnating adjective: Not stagnating.
unstagy adjective: Not stagy.
unstaid adjective: uncontrolled, unrestrained
unstaidness noun: Quality of being unstaid.
unstain verb: To remove a stain from.
unstainable adjective: Not stainable.
unstained adjective: Not dyed or discolored; not marred by any stains, marks, or spotting.
unstainedly adverb: Without bearing a stain; spotlessly.
unstainedness noun: The quality of being unstained.
unstaining adjective: Synonym of nonstaining.
unstaked adjective: Not staked.
unstale adjective: Not stale; fresh.
unstaled adjective: Not having gone stale; fresh.
unstaling adjective: That does not go stale; that remains fresh and current.
unstalkable adjective: Not stalkable.
unstalked adjective: Without a stalk.
unstall verb: To release from a stalled state.
unstalled adjective, verb: Not stalled.
unstammering adjective: Speaking or spoken without a stammer.
unstamp verb: To undo the act of stamping something; to remove a stamp from.
unstampable adjective: Not able to be marked with a stamp.
unstamped adjective, verb: Not stamped.
unstampeded adjective: Not stampeded.
unstan verb /ʌnˈstæn/: To stop acting as a stan (for); to cease to be an obsessive fan (of).
unstanchable adjective: Incapable of being stopped or brought to a close; unstoppable.
unstanchably adverb: In an unstanchable manner; unstoppably.
unstanched adjective: Not stanched.
unstand verb: Pronunciation spelling of understand.
unstandard adjective: Not standard; not at standard, or at a level other than that which is considered standard
unstandardised adjective: Alternative spelling of unstandardized.
unstandardized adjective: Not standardized.
unstanding adjective: Not standing; not in a standing, upright position
unstanzaic adjective: Not stanzaic.
unstaple verb: to remove staples from.
unstapled adjective: Not stapled; loose.
unstar verb: To remove a star from.
unstarch verb: To remove starch from
unstarched adjective: Not starched.
unstarchy adjective: Informal, casual.
unstarlike adjective: Not starlike; unlike a star (astral body).
unstarred adjective, verb: Not marked with a star.
unstarry adjective: Not starry.
unstart noun: A sudden compressor stall that can occur in the jet engines of supersonic aircraft.
unstartable adjective: That cannot be started.
unstarted adjective: Not started.
unstarting adjective: That forms an unstart
unstartled adjective: Not startled.
unstartling adjective: Not startling.
unstartlingly adverb: So as not to startle; unsurprisingly.
unstarved adjective: Not starved.
unstatable adjective: That cannot be stated or uttered.
unstate verb /ʌnˈsteɪt/: To deprive of state or dignity.
unstateable adjective: Alternative form of unstatable.
unstated adjective: Not explicitly stated; unspoken.
unstatedly adverb: Without being stated.
unstatedness noun: The state or condition of being unstated.
unstateliness noun: The state or condition of being unstately.
unstately adjective: Not stately.
unstatesmanlike adjective: Not statesmanlike.
unstatesmanly adjective: Not statesmanly.
unstatic adjective: Not static.
unstation verb: To remove from a station or fixed position.
unstationary adjective: Not stationary.
unstationed adjective: Not stationed.
unstatistic adjective: Not statistic.
unstatistical adjective: Not statistical.
unstatued adjective: Without a statue.
unstatuesque adjective: Not statuesque.
unstatutable adjective: not statutable
unstatutably adverb: In an unstatutable manner.
unstaunchable adjective: Incapable of being staunched, unstoppable.
unstaunched adjective: Not staunched.
unstaved adjective: Not staved.
unstay verb: To undo the establishment of; disestablish; dissolve; divest.
unstayable adjective: That cannot be stayed; inexorable.
unstayed adjective: Not stayed or held back.
unstayedness noun: Lack of restraint; impulsiveness.
unsteadfast adjective: Not steadfast; wavering, unfaithful.
unsteadfastly adverb: In an unsteadfast manner.
unsteadfastness noun: The quality of being unsteadfast.
unsteadily adverb: In an unsteady manner, so as to shake or falter.
unsteadiness noun: The quality of being unsteady.
unsteady adjective, verb /ʌnˈstɛdi/: Not held firmly in position; physically unstable.
unsteal verb: To reverse the process of stealing; to return, or never to have taken, something stolen.
unstealable adjective: That is not capable of being stolen.
unstealthily adverb: Without stealth.
unstealthy adjective: Not stealthy.
unsteamed adjective: Not steamed.
unsteaming adjective: Not steaming.
unsteamy adjective: Not steamy.
unsteckered adjective: unprocessed by a plugboard.
unsteel verb: To disarm; to soften.
unsteeled adjective, verb: Not having been steeled.
unsteely adjective: Not steely.
unsteep adjective: Not steep.
unsteeped adjective: Not having been steeped.
unsteeple verb: To release (the hands) from a steepled position.
unsteepled adjective, verb: Lacking a steeple.
unsteerable adjective: Not capable of being steered.
unsteered adjective: Not steered.
unstemmable adjective: That cannot be stemmed; being an unstoppable flood.
unstemmed adjective: Not stemmed.
unstenciled adjective: Not stenciled.
unstencilled adjective: Alternative spelling of unstenciled.
unstenotic adjective: Not stenotic
unstented adjective: Not stented.
unstentorian adjective: Not stentorian.
unstep verb: To remove (the mast) from a sailing vessel.
unstepmotherly adjective: Not befitting a stepmother.
unsteppable adjective: Incapable of being traversed or controlled by steps.
unstepped adjective, verb: Not stepped; without steps.
unstereophonic adjective: Not stereophonic.
unstereotyped adjective: Not stereotyped (made into a stock character).
unstereotypical adjective: Not stereotypical.
unstereotypically adverb: In an unstereotypical manner.
unsterile adjective: Not sterile.
unsterilised adjective: Alternative spelling of unsterilized.
unsterilizable adjective: Unable to be sterilized.
unsterilized adjective: Not sterilized.
unstewarded adjective: Not stewarded.
unstewardly adjective: Not stewardly.
unstewed adjective: Not stewed.
unstick verb: To free from the condition of being stuck.
unstickered adjective: Not stickered.
unstickied adjective, verb: Not stickied.
unsticking noun, verb: The act of removing something that was stuck
unsticky adjective, verb: Not sticky.
unstiff adjective: Not stiff; limber
unstiffen verb: To remove the stiffness from; to relax; to make pliant.
unstiffened adjective: Not stiffened.
unstifled adjective: Not stifled.
unstifling adjective: Not stifling.
unstigmatised adjective: Alternative form of unstigmatized.
unstigmatized adjective: Not stigmatized.
unstigmatizing adjective: That does not stigmatize.
unstiled adjective: Without a stile or stiles.
unstill adjective: Not still; changing or in motion.
unstillable adjective: That cannot be stilled.
unstilled adjective: Not stilled.
unstillness noun: The quality of not being still.
unstilted adjective: Not stilted.
unstimulated adjective: Not stimulated.
unstimulating adjective: That does not stimulate
unstimulatory adjective: Not stimulatory.
unsting verb: To remove the sting of
unstingable adjective: Not stingable.
unstinging adjective, verb: That does not sting.
unstingy adjective: Not stingy.
unstink verb: to remove the stench of something
unstinky adjective: Not stinky; not having an unpleasant smell
unstinted adjective /ʌnˈstɪn.tɪd/: Not constrained, not restrained, or not confined, great in amount or degree.
unstintedly adverb: In an unstinted manner.
unstinting adjective /(ˌ)ʌnˈstɪntɪŋ/: Generous and tireless with one's contributions of money, time, etc.
unstintingly adverb /ʌnˈstɪntɪŋli/: In an unstinting manner.
unstintingness noun: The quality of being unstinting.
unstippled adjective: Not stippled.
unstipulated adjective: Not having been stipulated.
unstir verb: Hypothetically, to undo the act of stirring or being stirred.
unstirrable adjective: Not stirrable.
unstirred adjective, verb: That has not been mixed by stirring.
unstirring adjective, verb: Without stirring; quiet and still.
unstirringly adverb: Without stirring; remaining quiet and still.
unstitch verb: To take out stitches from.
unstitchable adjective: Not stitchable; that cannot be stitched.
unstitched adjective, verb: not stitched
unstock adjective, verb: To remove the stock (store or supply) from; to empty of goods.
unstockable adjective: Not stockable.
unstockaded adjective: Not stockaded.
unstocked adjective: Not stocked.
unstockinged adjective: not wearing stockings
unstodgy adjective: Not stodgy.
unstoic adjective: Not stoic.
unstoical adjective: Not stoical.
unstoically adverb: Without stoicism.
unstoichiometric adjective: Not stoichiometric
unstoked adjective: Not having been stoked.
unstolen adjective: Not having been stolen.
unstolid adjective: Not stolid.
unstomachable adjective: Not stomachable; distasteful to the point that it cannot be accepted.
unstone verb: To undo the stoning of; to transform back from stone.
unstoned adjective: Not having been stoned; without the stone removed.
unstony adjective: Not stony.
unstooked adjective: not stooked
unstooped adjective: Not stooped.
unstooping adjective: Not stooping.
unstop verb: To remove a stoppage; to clear a blockage.
unstoppability noun: The quality of being unstoppable.
unstoppable adjective /ʌnˈstɔ.pə.bəl/: Unable to be stopped.
unstoppableness noun: The quality of being unstoppable.
unstoppably adverb: In an unstoppable manner.
unstopped adjective, verb: Not having been stopped.
unstopper verb: To remove the stopper from.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0): each word's first meaning. A word with a page of its own links to it; for the rest, this line is PlainSpell's entry. Total under U: 26,317 words, in 88 parts.