| DUMBFOUNDS | • dumbfounds v. Third-person singular simple present indicative form of dumbfound. • DUMBFOUND v. to strike dumb; to confuse with astonishment, also DUMBFOUNDER, DUMFOUND, DUMFOUNDER. |
| FONTICULUS | • fonticulus n. Synonym of fontanelle (“membranous spot on the head of a baby”). • fonticulus n. A small artificial ulcer produced by caustics or a lancet. • fonticulus n. (Anatomy) The depression just over the top of the breastbone. |
| FOUNDEROUS | • founderous adj. (Archaic) Difficult to travel; likely to trip one up. • FOUNDEROUS adj. causing to founder. |
| FULIGINOUS | • fuliginous adj. Pertaining to or resembling soot in such features as colour, texture or taste; sooty, dusky. • FULIGINOUS adj. sooty; having a dark or dusky color. |
| FULMINEOUS | • fulmineous adj. Fulminous; of or pertaining to thunder. • FULMINEOUS adj. pertaining to thunder and lightning, also FULMINOUS. |
| NIDIFUGOUS | • nidifugous adj. (Biology, of a bird) That leaves the nest shortly after hatching. • NIDIFUGOUS adj. leaving the nest soon after hatching. |
| NUBIFEROUS | • nubiferous adj. Bringing, or producing, clouds; cloudy. • NUBIFEROUS adj. cloud-bringing. |
| NUCIFEROUS | • nuciferous adj. Bearing or producing nuts. • NUCIFEROUS adj. nut-bearing. |
| SUFFUSIONS | • suffusions n. Plural of suffusion. • SUFFUSION n. the act of suffusing. |
| SULFONIUMS | • sulfoniums n. Plural of sulfonium. • SULFONIUM n. the positively charged group SH3, its salts or derivatives, also SULPHONIUM. |
| UNBOASTFUL | • unboastful adj. Not boastful. • UNBOASTFUL adj. not boastful. |
| UNCONFUSED | • unconfused v. Simple past tense and past participle of unconfuse. • unconfused adj. Not confused. • UNCONFUSE v. to remove the confusion from. |
| UNCONFUSES | • unconfuses v. Third-person singular simple present indicative form of unconfuse. • UNCONFUSE v. to remove the confusion from. |
| UNFOCUSSED | • unfocussed adj. Alternative spelling of unfocused. • UNFOCUSSED adj. not focussed, also UNFOCUSED. |
| UNFORTUNES | • unfortunes n. Plural of unfortune. • UNFORTUNE n. (archaic) ill-fortune. |
| UNIFLOROUS | • uniflorous adj. (Botany) Bearing a single flower. • UNIFLOROUS adj. bearing one flower only; as, a uniflorous peduncle. |