| BILLFISHES | • billfishes n. Plural of billfish. • BILLFISH n. a kind of fish with long jaws. |
| CHIEFLINGS | • chieflings n. Plural of chiefling. • CHIEFLING n. a minor chief. |
| EIGHTFOILS | • eightfoils n. Plural of eightfoil. • EIGHTFOIL n. an eight-leaved flower. |
| FIENDISHLY | • fiendishly adv. In a fiendish manner; evilly, wickedly. • fiendishly adv. Extremely, very in harsh or negative contexts. • FIENDISH adv. devilishly cruel. |
| FILEFISHES | • filefishes n. Plural of filefish. • FILEFISH n. a kind of fish with roughly granulated skin, which is sometimes used in place of sandpaper. |
| FILTHINESS | • filthiness n. The property of being filthy. • FILTHINESS n. the quality of being filthy. |
| FIRELIGHTS | • firelights n. Plural of firelight. • FIRELIGHT n. the light of a (usually domestic) fire. |
| FISHTAILED | • fishtailed v. Simple past tense and past participle of fishtail. • FISHTAIL v. to swing the tail of a moving vehicle from side to side. |
| FISHWIFELY | • fishwifely adj. (Derogatory) Befitting a fishwife; vulgar and raucous. • FISHWIFELY adj. like a fishwife, vituperative. |
| FLEMISHING | • flemishing v. Present participle of flemish. • FLEMISH v. to coil a rope in a certain way. |
| FLIGHTIEST | • flightiest adj. Superlative form of flighty: most flighty. • FLIGHTY adj. fickle. |
| HIGHFLIERS | • highfliers n. Plural of highflier. • high-fliers n. Plural of high-flier. • high␣fliers n. Plural of high flier. |
| LIONFISHES | • lionfishes n. Plural of lionfish. • LIONFISH n. a tropical fish. |
| MILKFISHES | • milkfishes n. Plural of milkfish. • MILKFISH n. a marine food fish. |
| NIGHTLIFES | • nightlifes n. (Nonstandard) plural of nightlife. • NIGHTLIFE n. life that goes on at night. |
| SAILFISHES | • sailfishes n. Plural of sailfish. • SAILFISH n. a large game fish with a sail-like dorsal fin. |
| SILVERFISH | • silverfish n. Certain insects. • silverfish n. Certain fish. • SILVERFISH n. any of various silver-coloured fishes, esp. the tarpon. |
| TILEFISHES | • tilefishes n. Plural of tilefish. • TILEFISH n. a marine food fish. |
| WHITEFLIES | • whiteflies n. Plural of whitefly. • WHITEFLY n. a small, whitish insect. |