| FAA# | Scots to fall |
| FAE# | Scots “from”, not related to FAY |
| FAP# | not that, just an adjective meaning “drunk”. |
| FAW# | 18th-19th century north-of-England word for (a specific family of?) itinerants |
| FAY | a fairy or sprite; also a verb, to fit closely. |
| FEG# | same as FIG |
| FEM | a category of igneous rocks, from “ferromagnesian”, contrasted with SAL, from “siliceous and aluminous”. The categorisation scheme appears to be no longer current. |
| FER | dialect FOR |
| FET | not that, just a verb to FETCH |
| FEU | a feudal tenure of land in which the vassal, in place of military service, makes a return of grain or money; also a grant of lands on these conditions. Variant form FEE evolved. “Also to feu off.” |
| FID | a spike for holding open strands of rope while splicing |
| FIL | false singular form of FILS (pl. fulus*), 1/100th of an Emirati dirham, or 1/1000th of a various dinars. |
| FON | not that, but a verb. Collins says “to compel”, OED says “to make a fool of” (from whence FUN). Neither seems particular cited after 1700 |
| FOO | yes the metasyntactic variable. |
| FOU | as an adjective, = FULL, or drunk. Collins thinks it’s also a noun, meaning “bushel”. |
| FOY | Until 1900, Scots a parting entertainment, present, cup of liquor, etc., given by or to one setting out on a journey. Collins says “loyalty”, meaning: it was sometimes used as a spelling of FAY = FAITH, e.g. in asseverative phrases, but OED only has two citations, 1590 and 1694. |
| FRA | title given to a monk or friar (from Italian for brother) |
| FUB | to cheat (c.f. FOB off) |
| FUD | a fuddy-duddy. Also a rabbit’s tail. |
| FUM | the phoenix, in Chinese mythology. Also FUNG |
