[moh-ter-mouth] /ˈmoʊ tərˌmaʊθ/

noun, plural motor-mouths
[moh-ter-mouths, mouth z] /ˈmoʊ tərˌmaʊθs, ˌmaʊðz/ (Show IPA). Slang.
a person who is a constant or irrepressible talker.
(slang) a garrulous person

any person who talks non-stop and quite fast, esp. about inconsequential topics; also, the incessant chatter of this type of person

The 11-year-old is a motormouth about Pokemon.
Usage Note

motormouth v


: I didn’t know he was motor-mouth/ The gangsta rapper is wrecking the mike with motormouth rhymes


A very talkative person; a compulsive jabberer; flapjaw, windbag: What else can you do with this motor-mouth but grin and bear it?/ He keeps on talking. A motor-mouth, this guy (1971+)


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