| CUNNILINCTUS | • cunnilinctus n. Rare form of cunnilingus. • CUNNILINCTUS n. oral stimulation of clitoris or vulva, also CUNNILINGUS. |
| INCUNABULIST | • incunabulist n. Someone interested in the field of incunabula. • INCUNABULIST n. a student of incunabula. |
| INFUNDIBULAR | • infundibular adj. Having the shape of a funnel. • infundibular adj. (Medicine) having to do with an infundibulum. • INFUNDIBULAR adj. funnel-shaped, also INFUNDIBULATE. |
| INFUNDIBULUM | • infundibulum n. (Anatomy) A funnel-shaped cavity or organ. • INFUNDIBULUM n. a funnel-shaped body part (e.g. the nares). |
| INVULTUATION | • invultuation n. A form of witchcraft: piercing a wax or clay image of a person in order to harm them. • INVULTUATION n. the stabbing of a wax image of person to be injured as form of witchcraft. |
| NONALUMINIUM | • nonaluminium adj. (British spelling) Alternative form of nonaluminum. • NONALUMINIUM adj. not made of aluminium, also NONALUMINUM. |
| QUINQUENNIAL | • quinquennial adj. Of or related to a five-year period. • quinquennial n. A five-year period. • quinquennial n. A 5th anniversary. |
| UNFULFILLING | • unfulfilling adj. Not producing fulfillment or a sense of accomplishment; unsatisfying. • UNFULFILLING adj. not fulfilling. |
| UNILLUSIONED | • unillusioned adj. Not illusioned. • UNILLUSIONED adj. free from illusion. |
| UNLIBIDINOUS | • unlibidinous adj. Not libidinous. • UNLIBIDINOUS adj. not libidinous. |
| UNNILHEXIUMS | • UNNILHEXIUM n. a chemical element, aka seaborgium. |
| UNNILPENTIUM | • unnilpentium n. (Dated) dubnium. • UNNILPENTIUM n. a former name of the transuranic element dubnium. |
| UNNILQUADIUM | • unnilquadium n. (Dated) rutherfordium. • UNNILQUADIUM n. a former name of the transuranic element rutherfordium. |
| UNNILSEPTIUM | • unnilseptium n. (Dated) bohrium. • UNNILSEPTIUM n. a former name of the transuranic element bohrium. |
| UNQUALIFYING | • unqualifying v. Present participle of unqualify. • UNQUALIFY v. to disqualify; to unfit. |