Words starting with U — 274 entries

The 274 dictionary words that begin with the letter U, in alphabetical order, each with its first definition. Accents do not affect filing: an accented initial is shelved under its base letter.

• u3 sensesThe twenty-first letter of the English alphabet, called u and written in the Latin script.
• U8 sensesThe twenty-first letter of the English alphabet, called u and written in the Latin script.
• U-turn4 sensesA turn in a vehicle carried out by driving in a semicircle in order to travel in the opposite direction.
• U.S.A.1 senseDated spelling of USA.
• uber2 sensesSuper; high-level; high-ranking.
• Uber5 sensesA car ride requested using the mobile application Uber.
• ufo1 senseA UFO.
• UFO1 senseAn "unfinished object" in knitting or other kinds of craft.
• ugh2 sensesUsed to express repugnance, disgust, or annoyance.
• ugly10 sensesDispleasing to the eye; aesthetically unpleasing.
• uh4 sensesExpression of thought, confusion, or uncertainty.
• uh-huh1 senseYes; yeah.
• uh-oh1 senseAn exclamation of error, concern, or awareness of a problem.
• uh-uh1 senseno
• Ukraine1 senseA country in Eastern Europe, bordering on the north shore of the Black Sea. Capital and largest city: Kyiv.
• Ukrainian3 sensesRelating to Ukraine or its people or language.
• ulcer4 sensesAn open sore of the skin, eyes or mucous membrane, often caused by an initial abrasion and generally maintained by an inflammation and/or an…
• ultimate11 sensesFinal; last in a series.
• ultimately4 sensesIndicating the last item.
• ultimatum2 sensesA final statement of terms or conditions made by one party to another, especially one that expresses a threat of reprisal or war if the terms are not…
• ultra9 sensesExtreme; far beyond the norm; fanatical; uncompromising.
• ultrasound5 sensesSound with a frequency greater than the upper limit of human hearing, which is approximately 20 kilohertz.
• Ulysses3 sensesThe Latin equivalent of Odysseus.
• um7 sensesExpression of hesitation, uncertainty or space filler in conversation.
• Um1 senseA surname from Korean.
• um-1 sensePrefix meaning around, about.
• Uma3 sensesOne of the names of Hindu goddess Parvati.
• umbrella9 sensesA cloth-covered frame used for protection against rain or sun.
• Un1 senseA surname.
• Una3 sensesA female given name from Irish.
• unable3 sensesNot able; lacking a certain ability.
• unacceptable3 sensesUnsatisfactory; not acceptable.
• unanimous2 sensesBased on unanimity, assent or agreement.
• unannounced1 senseNot announced beforehand.
• unanswered1 senseThat has not been answered or addressed.
• unarmed4 sensesDefenceless and lacking weapons.
• unattractive3 sensesNot handsome or beautiful or appealing.
• unauthorized2 sensesNot having any authority.
• unavailable3 sensesNot available.
• unavoidable3 sensesImpossible to avoid; bound to happen.
• unaware2 sensesNot aware or informed; lacking knowledge; unmindful.
• unbearable1 senseSo unpleasant or painful as to be unendurable.
• unbelievable3 sensesNot to be believed.
• unbelievably3 sensesIn a manner that one does not or cannot believe.
• unborn5 sensesNot yet born; yet to come; future.
• uncanny3 sensesStrange, and mysteriously unsettling (as if supernatural); weird.
• uncertain7 sensesNot certain; unsure.
• uncertainty3 sensesDoubt; the condition of being uncertain or without conviction.
• uncle12 sensesThe brother or brother-in-law of one’s parent.
• Uncle1 senseradiotelephony clear-code word for the letter U.
• unclean3 sensesDirty, soiled or foul.
• unclear5 sensesAmbiguous; liable to more than one interpretation.
• uncomfortable4 sensesNot comfortable; causing discomfort.
• uncommon3 sensesRare; not readily found; unusual.
• unconditional3 sensesAbsolute; without conditions, limitations, reservations or qualifications.
• unconscious4 sensesNot awake; having no awareness (usually as the result of a head injury).
• uncontrollable1 senseNot able to be controlled, contained or governed.
• unconventional4 sensesNot adhering to custom, convention, or accepted standards.
• uncool2 sensesNot in accord with the current fashion, standards, or mores of a particular group; not cool.
• uncover6 sensesTo remove a cover from.
• uncovered3 sensesNot covered or protected from the weather, etc.
• und2 sensesA billow- or wave-like marking.
• undead5 sensesPertaining to a corpse, though having qualities of life.
• undefeated1 senseNever defeated; always victorious.
• under21 sensesBeneath; below; at or to the bottom of, or the area covered or surmounted by.
• underage4 sensesBelow the legal age (usually age 18 or 21) for some activity, such as consuming alcohol or engaging in sexual intercourse.
• undercover4 sensesPerformed or happening in secret.
• underdog3 sensesA competitor thought unlikely to win.
• underestimate3 sensesTo estimate too low; to perceive (someone or something) as having a lower value, quantity, worth, etc., than what he/she/it actually has.
• undergo3 sensesTo experience; to pass through a phase.
• underground10 sensesBelow the ground; below the surface of the Earth.
• Underground1 senseThe London Underground.
• underlying4 sensesLying underneath.
• undermine4 sensesTo dig underneath (something), to make a passage for destructive or military purposes; to sap.
• underneath7 sensesBelow; in a place beneath.
• underpants1 senseUnderwear covering the genitalia and often buttocks, usually going no higher than the navel.
• understand9 sensesTo know the meaning of; to parse or have parsed correctly; to comprehend.
• understandable2 sensesCapable of being understood; comprehensible.
• understanding8 sensesThe act of one that understands or comprehends; the mental process of discernment of meaning.
• understatement3 sensesA figure of speech whereby something is made to seem smaller or less important than it actually is, either through phrasing or lack of emphasis,…
• understood2 sensesHaving been comprehended.
• undertake10 sensesTo take upon oneself; to start, to embark on.
• undertaker4 sensesA funeral director; someone whose business is to manage funerals, burials and cremations.
• undertaking4 sensesThe business of an undertaker, or the management of funerals.
• underwater9 sensesBeneath the surface of the water; of or pertaining to the region beneath the water surface.
• underway4 sensesIn motion, in progress; being done or carried out; on a journey.
• underwear2 sensesClothes worn next to the skin, underneath outer clothing.
• underwood1 senseUnderbrush, undergrowth.
• Underwood17 sensesA typewriter made by the Underwood Typewriter Company.
• underworld3 sensesThe world of the dead, located underneath the world of the living; the afterlife.
• undo5 sensesTo reverse the effects of an action.
• undone3 sensesNot done.
• undoubtedly1 senseWithout doubt; definitely.
• undress8 sensesTo remove one’s clothing.
• undressed3 sensesHaving partially or completely removed one's clothes.
• uneasy4 sensesRestless; disturbed by pain, anxiety.
• unemployed3 sensesHaving no job despite being able and willing to work.
• unemployment5 sensesThe state of having no job; joblessness.
• unethical2 sensesBreaching the established standards of conduct or behavior within a particular organization or profession.
• unexpected2 sensesNot expected, anticipated or foreseen.
• unexpectedly1 senseIn an unexpected manner.
• unexplained1 senseNot explained; of unknown cause or origin.
• unfair5 sensesNot fair. Not just.
• unfaithful6 sensesNot having religious faith.
• unfamiliar2 sensesStrange, not familiar.
• unfinished3 sensesNot finished. Not completed; unresolved.
• unfit4 sensesNot fit; not having the correct requirements.
• unfold7 sensesTo undo a folding.
• unforgettable1 senseVery difficult or impossible to forget.
• unforgivable1 senseNot forgivable; inexcusable.
• unfortunate5 sensesNot favored by fortune.
• unfortunately2 sensesHappening through bad luck, or because of some unfortunate event.
• ungrateful3 sensesNot grateful; not expressing gratitude.
• unhappiness1 senseThe feeling of not being happy.
• unhappy6 sensesNot happy; sad.
• unharmed1 senseWhich has not suffered harm; which has not been injured or damaged.
• unhealthy4 sensesCharacterized by, or conducive to poor health.
• unheard3 sensesNot heard.
• unholy2 sensesNot holy; (by extension) evil, impure, or otherwise perverted.
• uni1 senseSea urchin eaten as sushi.
• Uni2 sensesA detached object with one known moon, Tinia.
• UNI1 senseThe station code of University in Hong Kong.
• unicorn19 sensesA mythical, horselike creature with a horn on its forehead, supposed to be very rare and to be drawn to virgins and other chaste maidens.
• unidentified1 senseNot identified; having an unknown or unnamed identity.
• unified3 sensesunited into a whole
• uniform9 sensesUnvarying; all the same.
• unimaginable1 senseUnable to be imagined; inconceivable or mind-boggling; beyond belief.
• unimportant1 sensepetty; not important or noteworthy
• unintelligible1 senseNot intelligible; unable to be understood.
• uninvited2 sensesNot invited.
• union15 sensesThe act of uniting or joining two or more things into one.
• Union42 sensesThe 0-10-2 locomotive wheel arrangement.
• unique5 sensesBeing the only one of its kind; unequaled, unparalleled or unmatched.
• unison4 sensesIdentical pitch between two notes or sounds; the simultaneous playing of notes of identical pitch (or separated by one or more octaves).
• UNISON1 senseA public-sector trade union in the United Kingdom.
• unit28 sensesOneness, singularity, seen as a component of a whole number; a magnitude of one.
• unite3 sensesTo bring together as one.
• united2 sensesJoined into a single entity.
• United1 senseany of many football teams formed by the amalgamation of smaller ones
• unity7 sensesOneness: the state or fact of being one undivided entity.
• Unity17 sensesA female given name from English.
• universal6 sensesOf or pertaining to the universe.
• universe11 sensesThe sum of everything that exists in the cosmos.
• Universe1 senseOur universe, the sum of everything that exists in the cosmos, including time and space itself.
• university2 sensesAn institution of higher education that provides facilities for teaching, research, and the conferral of academic degrees across undergraduate,…
• unjust1 senseNot fair, just or right.
• unkind3 sensesLacking kindness, sympathy, benevolence, gratitude, or similar; cruel, harsh or unjust; ungrateful.
• unknown4 sensesNot known; unidentified; not well known.
• unlawful1 senseProhibited; not permitted by law (either civil or criminal law; see illegal)
• unleash3 sensesTo free from a leash, or as from a leash.
• unleashed2 sensesNot leashed; without a leash on it.
• unless3 sensesExcept on a specified condition; if not.
• unlike11 sensesNot like; dissimilar (to); having no resemblance; unalike.
• unlikely4 sensesNot likely; improbable; not to be reasonably expected.
• unlimited1 senseLimitless or without bounds; unrestricted.
• unload12 sensesTo remove the load or cargo from (a vehicle, etc.).
• unloaded1 senseNot loaded (in various senses).
• unloading1 senseThe act by which something is unloaded.
• unlock9 sensesTo undo or open a lock or something locked by, for example, turning a key, or selecting a combination.
• unlocked2 sensesNot secured or protected by an engaged lock.
• unlucky5 sensesUnfortunate, marked by misfortune.
• unmarked6 sensesNot bearing identification.
• unmarried2 sensesHaving no husband or wife.
• unnatural4 sensesNot natural.
• unnecessarily2 sensesIn an unnecessary way; not by necessity.
• unnecessary2 sensesNot needed or necessary.
• unnoticed1 senseNot noticed.
• uno1 senseA term said when the number of cards in player’s hand is reduced to one. If another player says this before the one whose hand contains only one…
• Uno3 sensesA card game similar to crazy eights, played with specially printed cards that have colours instead of suits.
• unofficial4 sensesNot officially established.
• unorthodox1 senseUnusual, unconventional, or idiosyncratic.
• unpack5 sensesTo remove from a package or container, particularly with respect to items that had previously been arranged closely and securely in a pack.
• unpaid2 sensesNot paid for.
• unpleasant1 senseNot pleasant.
• unpopular2 sensesLacking popularity.
• unprecedented1 senseNever before seen, done, or experienced; without precedent.
• unpredictable2 sensesUnable to be predicted.
• unprepared2 sensesNot prepared; caught by surprise.
• unprofessional4 sensesUnbecoming of a professional; hence inappropriate in the workplace.
• unprotected1 senseNot protected; lacking defence or protection; exposed.
• unravel8 sensesTo cause (something) to no longer be ravelled or tangled; to disentangle, to untangle.
• unreal2 sensesNot real or substantial; having no actual presence in reality; lacking the characteristics of reality.
• unreasonable2 sensesWithout the ability to reason; unreasoning.
• unrelated2 sensesNot connected or associated.
• unreliable2 sensesNot reliable.
• unrest2 sensesA state of trouble, confusion and turbulence, especially in a political context; a time of riots, demonstrations and protests.
• unsafe2 sensesNot safe (various senses); dangerous.
• unseen4 sensesNot seen or discovered; invisible.
• unsettling2 sensesThat makes one troubled or uneasy; disquieting or distressing.
• unsolved1 senseNot yet solved.
• unspeakable6 sensesIncapable of being spoken or uttered.
• unstable8 sensesNot stable.
• unstoppable1 senseUnable to be stopped.
• unsuccessful1 senseFailed, not successful.
• unsure2 sensesuncertain, ambivalent.
• unthinkable4 sensesThat cannot be believed.
• untie5 sensesTo loosen, as something interlaced or knotted; to disengage the parts of.
• until7 sensesUp to the time of (something happening); pending.
• unto4 sensesUp to the time or degree that; until.
• untouchable6 sensesNot able to be touched.