| MOUNTENAUNCE | • MOUNTENAUNCE n. (Spenser) amount; distance, also MOUNTENANCE. |
| MUTINOUSNESS | • mutinousness n. The state or condition of being mutinous. • MUTINOUSNESS n. the state of being mutinous. |
| OUTNUMBERING | • outnumbering v. Present participle of outnumber. • OUTNUMBER v. to surpass in number. |
| ULTRAMUNDANE | • ultramundane adj. Extraordinary; abnormal. • ultramundane adj. Extraterrestrial; outside of earth or the universe. • ULTRAMUNDANE adj. situated beyond the world, or beyond the limits of the solar system. |
| UNDOCUMENTED | • undocumented adj. Lacking instructions or reference material. • undocumented adj. Not having official documents that provide identification, authorization, etc. • undocumented n. (Informal) Synonym of undocumented immigrant. |
| UNGUENTARIUM | • unguentarium n. A small bottle used to store balms or scented oils. • UNGUENTARIUM n. a vessel for holding unguents. |
| UNIMPORTUNED | • unimportuned adj. Not importuned. • UNIMPORTUNED adj. not importuned. |
| UNMUNITIONED | • unmunitioned adj. Not supplied with munitions. • UNMUNITIONED adj. not munitioned. |
| UNNILPENTIUM | • unnilpentium n. (Dated) dubnium. • UNNILPENTIUM n. a former name of the transuranic element dubnium. |
| UNNILSEPTIUM | • unnilseptium n. (Dated) bohrium. • UNNILSEPTIUM n. a former name of the transuranic element bohrium. |
| UNTRANSMUTED | • untransmuted adj. Not transmuted. • UNTRANSMUTED adj. not transmuted. |
| UNTREMENDOUS | • untremendous adj. Not tremendous. • UNTREMENDOUS adj. not tremendous. |
| VERUMONTANUM | • verumontanum n. (Anatomy) An elevation or crest in the wall of the urethra where the seminal ducts enter it. • VERUMONTANUM n. a ridge on the male urethra where the duct conveying prostatic fluid, sperm and other fluids enters it. |