| DOF | • dof adj. (South Africa) Stupid; thick. • DoF n. Alternative form of DOF (In the sense Degree(s) of Freedom.). • DOF n. Initialism of date of filing. |
| 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. |
| FRO | • fro adv. (Archaic) From; away; back or backward. • fro prep. (Obsolete) From. • fro n. (Slang) Clipping of afro (hairstyle). |
| OAF | • oaf n. (Derogatory) A person, especially a large male, who is clumsy or a simpleton. • oaf n. (Obsolete) An elf’s child; a changeling left by fairies or goblins, hence, a deformed or foolish child. • OAF n. a clumsy, stupid person. |
| OFF | • off adv. In a direction away from the speaker or other reference point. • off adv. Into a state of non-operation or non-existence. • off adv. So as to remove or separate, or be removed or separated. |
| OFT | • oft adv. (Chiefly poetic, dialectal, and in combination) often; frequently; not rarely. • OFT prop.n. (UK) Initialism of Office of Fair Trading. • OFT adv. often. |
| OOF | • oof interj. (Onomatopoeia) A sound mimicking the loss of air, as if someone’s solar plexus had just been struck. • oof interj. (Slang) Synonym of ouch (“expressing sympathy at another’s pain, shock at a high price, etc.”). • oof n. A sound made in pain, as when expelling air after being struck. |
| ORF | • orf n. (Obsolete) Cattle. • orf n. (Medicine) An exanthemous disease caused by a parapox virus, occurring primarily in sheep and goats… • orf n. Alternative form of orfe (the fish). |
| UFO | • ufo n. A UFO. • UFO n. Initialism of unidentified flying object; (loosely) an alien spacecraft. • UFO n. (Colloquial) An "unfinished object" in knitting or other kinds of craft. |
| WOF | • WOF n. (Quilting) Width of fabric. • WOF n. Warmed-over flavor; A rancid flavor that occurs in refrigerated cooked meat. • WOF n. (New Zealand) Initialism of warrant of fitness. |