Browse Other U Word Lengths
4-Letter U Words by Ending Letter
All 86 4-Letter Words Starting With U
ubac(geography) The shady side of a mountain; in the northern hemisphere, especially a north-facing slope.uberSuper; high-level; high-ranking.ucky(MLE) Alternative form of suck (in the particular sense of fellatio)udadAlternative spelling of urad.udal(Shetland, Orkney) Allodial, inalienable.udic(soil science, of a soil) Somewhat moist at most times of the year.udonA Japanese wheat noodle.ufraA disease of rice, caused by the nematode Ditylenchus angustus.ugal(music) A bronze metallophone used in the classical gamelan music of Indonesia.ugbaA Nigerian condiment made from fermented African oil bean seeds (Pentaclethra macrophylla).ugliCitrus × paradisi, a cross between a tangerine, Citrus reticulata, and a grapefruit Citrus paradisi, grown in the West Indies.uglyDispleasing to the eye; aesthetically unpleasing.ugmo(slang) An ugly person.uhohAlternative form of uh-oh.uhuhAlternative spelling of uh-uh.uint(programming) Abbreviation of unsigned integer.ukazAlternative form of ukase.ukhaA clear Russian fish soup.ulanAlternative form of uhlan.ulna(anatomy) The bone of the forearm that extends from the elbow to the wrist on the side opposite to the thumb, corresponding to the fibula of the hind limb. Also, the corresponding bone in the forelimb of any vertebrate.ultoContraction of ultimo (of last month).uluaAny fish of the genus Ulua.ulvaAny organism of the genus Ulva.umbi(medicine, colloquial) Clipping of umbilicus.umbo(biology) A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane.ummaAlternative spelling of ummah.umolAlternative spelling of µmol.umpy(sports, informal) An umpire.umraAlternative form of umrah.unaiA two-toed sloth.unalsingle, based on the number oneunauLinnaeus's two-toed sloth, Choloepus didactylus, a two-toed sloth native to South America.unbe(transitive) To deprive (someone or something) of being; to make nonexistent.unca(dialect) Uncle (especially as a term of address).unceEarly Modern spelling of ounce.unch(crosswording) An unchecked square: one that is part of only one entry (i.e., across or down, but not both).unco(Scotland) Strange, weird.unct(Ayurvedic medicine) To lubricate.undoTo reverse the effects of an action.undy(heraldry) Alternative form of undé.ungaSarotherodon linnellii, a cichlid endemic to Lake Barombi Mbo in western Cameroon.unioAny of the genus Unio of freshwater musselsunit(mathematics) Oneness, singularity, seen as a component of a whole number; a magnitude of one.univ(Canada, US, informal) universityunix(software) Alternative form of Unix.unke(dated) The European fire-bellied toad (Bombina bombina).unky(colloquial, childish, endearing) Uncle.unli(Philippines) unlimiteduntoUp to; indicates a motion towards a thing and then stopping at it.untyObsolete form of untie.upas(uncountable) A virulent poison used in Java and the adjacent islands for poisoning arrows and derived from the tree.updoA woman's hairdo in which most hair is kept above the neckupgo(archaic) to go upuplaAlternative form of oopla.upmaAn Indian porridge of dry roasted semolina or coarse rice flour, often with vegetables and seasonings.uponA higher-register or more formal alternative to on in most, though not all, prepositional uses.uppeObsolete spelling of up.uppySynonym of uppity.uptoMisspelling of up to.urad(botany, India cooking) Vigna mungo, a South Asian bean used to make dal.urao(mineralogy) The mineral trona.urbsA walled city in Ancient Rome.urdy(heraldry) Alternative form of urdé.urea(organic chemistry, countable) Any N-substituted derivative of urea, with the general formula (R₁R₂N)CO(NR₃R₄).urgeA strong desire to do something.uricPertaining to, contained in, or obtained from urine.urkaA common criminal in Russia.urna(Buddhism) A spiral or circular dot placed on the forehead of Buddhist images as an auspicious mark.urneObsolete spelling of urn.urpsthird-person singular simple present indicative of urpurutA traditional Malay massage which involves soft-tissue manipulation of the whole body to alleviate different types of conditions and ailments.urvaA crab-eating mongoose (Urva urva, syn. Herpestes urva).usedsimple past and past participle of useuseeOne who or that which is used.userOne who uses or makes use of something, a consumer or client or an express or implied licensee (free user) or a trespasser.usheAlternative form of uzhe; Clipping of usual.usogA Filipino cultural syndrome where a visit from a stranger is believed to cause fever and convulsions in a child.usta(informal) used to: accustomed tousus(law) The use of something.utaiThe singing that accompanies noh (classical Japanese drama).util(countable, economics) A hypothetical unit measuring satisfaction.utisAlternative form of utas.uuidAlternative letter-case form of UUID.uvea(anatomy) The middle of the three concentric layers that make up the eye; it is pigmented and vascular, and comprises the choroid, the ciliary body, and the iris.uvicOnly used in uvic aciduzhe(slang) Clipping of usual.
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