| FOB | • fob n. A little pocket near the waistline of a pair of trousers or in a waistcoat or vest to hold money or… • fob n. A short chain or ribbon to connect such a pocket to the watch. • fob n. (See usage notes) A small ornament attached to such a chain. |
| FOE | • foe adj. (Obsolete) Hostile. • foe n. An enemy. • foe n. A unit of energy equal to 1044 joules. |
| FOG | • fog n. (Uncountable) A thick cloud that forms near the ground; the obscurity of such a cloud. (Compare mist, haze.) • fog n. (Uncountable) A mist or film clouding a surface. • fog n. A state of mind characterized by lethargy and confusion. |
| FOH | • foh interj. (Obsolete) An exclamation of abhorrence or contempt. • FOH prop.n. Initialism of Formula One Holdings. • FOH n. (Electronics) Initialism of first-order hold. |
| FON | • fon n. (Obsolete) A fool or idiot. • fon n. A chieftain or king of a region of Cameroon. • fon sym. (International standards) ISO 639-2 & ISO 639-3 language code for Fon. |
| FOO | • foo n. (Historical, obsolete) Alternative form of fu: an administrative subdivision of imperial China; the… • foo n. (Programming) A metasyntactic variable used to represent an unspecified entity. If part of a series… • foo n. (Fandom slang) Alternative letter-case form of Foo (“placeholder god”). |
| FOP | • fop n. (Dated) A vain man; a dandy. • FOP n. (Pathology) Initialism of fibrodysplasia ossificans progressiva. • FOP n. (Law) Initialism of freedom of panorama. |
| FOR | • for conj. Because, as, since. • for prep. Towards; in the direction of. • for prep. Directed at; intended to belong to. |
| FOU | • fou adj. (Scotland) Drunk. • FOU adj. (Scots) drunk. • FOU n. a bushel. |
| FOX | • fox n. A red fox, small carnivore (Vulpes vulpes), related to dogs and wolves, with red or silver fur and a bushy tail. • fox n. Any of numerous species of small wild canids resembling the red fox. In the taxonomy they form the tribe… • fox n. The fur of a fox. |
| FOY | • foy n. (Obsolete, rare) Faith, allegiance. • foy n. (Obsolete) A feast given by one about to leave a place. • Foy prop.n. A surname. |