| ANGELFISHES | • angelfishes n. Plural of angelfish. • ANGELFISH n. a brightly coloured tropical fish. |
| DAMSELFLIES | • damselflies n. Plural of damselfly. • DAMSELFLY n. an insect of the order Odonata, resembling the dragonfly. |
| FATIGUELESS | • fatigueless adj. Free from fatigue. • FATIGUELESS adj. without fatigue. |
| FEDERALISES | • federalises v. Third-person singular simple present indicative form of federalise. • FEDERALISE v. to unite in a federation, also FEDERALIZE. |
| FEDERALISMS | • federalisms n. Plural of federalism. • FEDERALISM n. the principles of Federalists or of federal union. |
| FEDERALISTS | • federalists n. Plural of federalist. • FEDERALIST n. a supporter of a federal constitution or union. |
| FINABLENESS | • FINABLENESS n. the state of being finable. |
| FLAKINESSES | • flakinesses n. Plural of flakiness. • FLAKINESS n. the state of being flaky. |
| FRAGILENESS | • fragileness n. The property of being fragile. • FRAGILENESS n. the state of being fragile. |
| FRAILNESSES | • frailnesses n. Plural of frailness. • FRAILNESS n. the state of being frail. |
| FRIABLENESS | • friableness n. The state or quality of being friable; friability. • FRIABLENESS n. the state of being friable. |
| LEAFINESSES | • leafinesses n. Plural of leafiness. • LEAFINESS n. the state of being leafy. |
| LUCIFERASES | • luciferases n. Plural of luciferase. • LUCIFERASE n. an oxidising enzyme in the luminous organs of certain animals that acts on luciferin to produce bioluminescence. |
| PERSIFLAGES | • persiflages n. Plural of persiflage. • PERSIFLAGE n. (French) frivolous, bantering talk. |
| SABLEFISHES | • sablefishes n. Plural of sablefish. • SABLEFISH n. a large spiny-finned gray to blackish fish of the Pacific coast. |