| FAINEANTS | • faineants n. Plural of faineant. • fainéants n. Plural of fainéant. • FAINEANT n. (French) a lazy person. |
| FAINTNESS | • faintness n. The property of being or feeling faint. • FAINTNESS n. the state of being faint. |
| FANCINESS | • fanciness n. The property of being fancy. • FANCINESS n. the state of being fancy. |
| FASTENING | • fastening v. Present participle of fasten. • fastening n. A hook or similar restraint used to fasten things together; fastener. • FASTENING n. something that secures. |
| FEISEANNA | • feiseanna n. Plural of feis. • FEIS n. (Irish) an ancient Irish assembly for the proclamation of laws etc. |
| FENTANYLS | • fentanyls n. Plural of fentanyl. • FENTANYL n. a narcotic opioid. |
| FIBRANNES | • FIBRANNE n. a fabric made of spun rayon yarn. |
| FONTANELS | • fontanels n. Plural of fontanel. • FONTANEL n. a membrane-covered gap between the immature parietal bones in the skull of a foetus or infant, also FONTANELLE. |
| FONTANGES | • fontanges n. Plural of fontange. • FONTANGE n. (French) a kind of tall headdress worn in the seventeenth century. |
| FRANKNESS | • frankness n. The state of being frank; candour; honesty. • FRANKNESS n. the quality of being frank. |
| INFANCIES | • infancies n. Plural of infancy. • INFANCY n. the state of being an infant. |
| INFESTANT | • infestant n. That which infests something. • INFESTANT n. something that infests. |
| NEFANDOUS | • nefandous adj. (Archaic) Unspeakable, appalling. • NEFANDOUS adj. unspeakable, unmentionable. |
| SAFRANINE | • safranine n. Any of a class of red to blue azine dyes. • SAFRANINE n. the yellow colouring matter in saffron; a coal tar derivative which dyes yellowish red, also SAFRANIN. |
| UNFASTENS | • unfastens v. Third-person singular simple present indicative form of unfasten. • UNFASTEN v. to release from a fastening. |