The 4 letter words with definitions, separated alphabetically.
Now updated for CSW24. New words, if any, and new inflections of existing words, are shown in red.
| udal | (Orkneys) allodial, without feudal superior. Also ODAL. |
| udon | In Japanese cooking, large noodles of wheat flour > UDONS. |
| udos | (Pl.) UDO, a kind of Japanese ARALIA. |
| ueys | (Pl.) UEY, a U-turn. |
| ufos | (Pl.) UFO, an unidentified flying object. |
| ughs | (Pl.) UGH, an exclamation expression repugnance. |
| ugly | Not beautiful > UGLIER, UGLIEST; UGLILY; (verb) to make ugly > UGLIES, UGLYING, UGLIED. |
| ukes | (Pl.) UKE, a ukulele. |
| ulan | (Ger.) a light cavalryman in semi-oriental uniform; a Prussian lancer > ULANS. Also UHLAN. |
| ules | (Pl.) ULE, a Central American rubber tree. |
| ulex | (Lat.) gorse > ULEXES. |
| ulna | (Lat.) the inner and larger of the two bones of the forearm > ULNAS or ULNAE. |
| ulus | (Pl.) ULU, an Eskimo knife. |
| ulva | (Lat.) a genus of thin papery bright green seaweeds including the kinds called sea lettuce > ULVAS. [L. ulva, sedge]. |
| umbo | (Lat.) the boss of a shield > UMBOS or UMBONES. |
| umes | (Pl.) UME, a fleshy yellow fruit, similar to an apricot but having a sour flavour, used mainly to make drinks, preserves, and sauces. |
| umma | The body of Muslim believers considered as one community > UMMAS. |
| umph | An interjection. Also HUMPH. |
| umps | (3rd.) UMP, to umpire. |
| umpy | (Aust. sl.) an umpire > UMPIES. Also UMPIE. |
| umra | A lesser pilgrimage to Mecca made separately or at the same time as the hajj, and consisting of a number of devotional rituals performed within the city > UMRAS. |
| umus | (Pl.) UMU, a Maori oven. |
| unai | (Tupi) a two-toed sloth > UNAIS. Also UNAU. |
| unau | (Tupi) a two-toed sloth > UNAUS. Also UNAI. |
| unbe | Not to be > UNBEING, UNBEEN. |
| unce | (Scots) an ounce > UNCES. |
| unci | (Pl.) UNCUS, a hook or hooklike process or structure. |
| unco | (Scots) strange; foreign; extraordinary > UNCOER, UNCOEST; (noun) a stranger, a piece of news > UNCOS or UNCOES. |
| unde | Wavy. Also UNDEE, UNDY, OUNDY. |
| undo | To bring to ruin > UNDOES, UNDOING, UNDID, UNDONE. |
| undy | Wavy. Also UNDEE, UNDE, OUNDY. |
| unis | (Pl.) UNI, university. |
| unit | A specific quantity used as a standard of measurement > UNITS. |
| unto | To. |
| upas | (Malay) a tree with a poisonous drip > UPASES. [Malay upas, poison]. |
| upby | A little farther on. Also UPBYE. |
| updo | An upswept hairdo > UPDOS. |
| upgo | To go up > UPGOES, UPGOING, UPWENT, UPGONE. |
| upon | On. |
| upsy | (Noun) a carousal > UPSIES. Also UPSEY, UPSEE. |
| upta | Of poor quality. Also UPTER. |
| urao | (Spanish) a native hydrated double salt of sodium carbonate and sodium bicarbonate, occurring esp. as an evaporite > URAOS. Aka TRONA. |
| urbs | (Pl.) URB, an urban area. |
| urde | Pointed, with a pattern of points. Also URDY, URDEE. |
| urds | (Pl.) URD, an Indian bean. |
| urdy | Pointed, with a pattern of points. No comp! Also URDE, URDEE. |
| urea | A substance found in mammalian urine, the chief form in which nitrogenous waste is excreted > UREAS. |
| ures | (Pl.) URE, an extinct wild ox. |
| urge | To force forward > URGES, URGING, URGED. |
| uric | Of or pertaining to urine; obtained from urine; as, uric acid. |
| urns | (3rd.) URN, to enclose in an urn. |
| urps | (3rd.) URP, to vomit. |
| ursa | (Lat.) a female bear > URSAE. |
| urus | An extinct bovine mammal, aka URE or AUROCHS > URUSES. |
| urva | (Nepali) the crab-eating mongoose of SE Asia > URVAS. |
| used | (Pt.) USE, to put to some purpose. |
| user | One that uses > USERS. |
| uses | (3rd.) USE, to put to some purpose. |
| utas | The seventh day after a festival > UTASES. |
| utes | (Pl.) UTE, a utility vehicle. |
| utis | (Shakesp.) riotous merriment, which accompanied the eighth day of a festival > UTISES. |
| utus | (Pl.) UTU, the (Maori) settlement of a debt. |
| uvae | (Pl.) UVA, a grape or grape-like berry. |
| uvas | (Pl.) UVA, a grape or grape-like berry. |
| uvea | The posterior pigment-bearing layer of the pupil of the eye > UVEAS. |