| DUO | • duo n. Two people who work or collaborate together as partners; especially, those who perform music together. • duo n. Any pair of two people. • duo n. Any cocktail consisting of a spirit and a liqueur. |
| FOU | • fou adj. (Scotland) Drunk. • FOU adj. (Scots) drunk. • FOU n. a bushel. |
| LOU | • Lou prop.n. (Countable) A unisex given name. • Lou prop.n. (With definite article) A nickname for St. Louis. • Lou prop.n. A Southeast Admiralty Islands language spoken on Lou Island of Manus Province, Papua New Guinea. |
| MOU | • mou part. (Malaysia, Singapore, colloquial) Sentence-final particle, forms a tag question. • Mou prop.n. A surname from Chinese. • MoU n. Abbreviation of memorandum of understanding. |
| OUD | • oud n. (Music) A short-necked and fretless plucked stringed instrument of the lute family, of Arab and Turkish origin. • oud n. (Perfume) Agarwood. • OUD n. an African stringed instrument. |
| OUK | • OUk. prop.n. (Linguistics) Abbreviation of Old Ukrainian. • OUK n. (Scots) a week, also OULK. |
| OUP | • oup adv. (Regional) Pronunciation spelling of up. • OUP prop.n. Initialism of Oxford University Press. • OUP v. to bind with thread, also OOP. |
| OUR | • our det. Belonging to us. • our det. Of, from, or belonging to the nation, region, or language of the speaker. • our det. (Northern England, Scotland) Used before a person’s name to indicate that the person is in one’s family… |
| OUS | • ous n. Plural of ou. • -ous suff. Used to form adjectives from nouns, to denote… • -ous suff. (Chemistry) Used in chemical nomenclature to name chemical compounds in which a specified chemical element… |
| OUT | • out adv. Away from the inside, centre or other point of reference. • out adv. Away from home or one’s usual place. • out adv. Outside; not indoors. |
| SOU | • sou n. (Historical) An old French copper coin equal to one twentieth of a livre or twelve deniers; one sou… • sou n. (Dated, slang) Cent; pocket money. • sou n. (Dated) A thing of the smallest value; a whit; a jot. |
| UDO | • udo n. Japanese spikenard. • UDO n. (Japanese) a Japanese species of aralia. |
| UFO | • ufo n. A UFO. • UFO n. Initialism of unidentified flying object; (loosely) an alien spacecraft. • UFO n. (Colloquial) An "unfinished object" in knitting or other kinds of craft. |
| UPO | • upo n. Lagenaria siceraria; a vine grown for its fruit. • upo' prep. Pronunciation spelling of upon. • UPO prep. upon. |
| YOU | • you pron. (Object pronoun) The people spoken, or written to, as an object. • you pron. (Reflexive, now US colloquial) (To) yourselves, (to) yourself. • you pron. (Object pronoun) The person spoken to or written to, as an object. (Replacing thee; originally as a mark of respect.) |