[mouth-foo l] /ˈmaʊθˌfʊl/
noun, plural mouthfuls.
the amount a can hold.
the amount taken into the at one time.
a small quantity.
Informal. a spoken remark of great truth, relevance, effectiveness, etc.:
You said a mouthful!
a long word or group of words, especially one that is hard to pronounce.
noun (pl) -fuls
as much as is held in the mouth at one time
a small quantity, as of food
a long word or phrase that is difficult to say
(Brit, informal) an abusive response
(informal, mainly US & Canadian) an impressive remark (esp in the phrase say a mouthful)
1520s, “as much as a mouth can hold,” from mouth (n.) + -ful. Meaning “a lot to say” is from 1748.
see: say a mouthful
noun a tooth and gum shield worn inside the mouth by athletes or for orthodontic reasons; also written mouth guard
- Mouth guard
noun See mouthguard
noun, South Midland and Southern U.S. 1. (def 1).
- Mouth on someone
verb phrase To inform on; squeal: He got busted, and he mouthed on everybody he knew (1960s+)