An idiomatic slang term for someone who is headstrong, ungovernable, or difficult to control — a person who talks back, refuses to be reined in, and says exactly what they think regardless of the consequences.
An idiomatic slang term for someone who is headstrong, ungovernable, or difficult to control — a person who talks back, refuses to be reined in, and says exactly what they think regardless of the consequences. The metaphor comes from horsemanship: a 'hot-mouthed' horse resists the bit and is hard to control, and the same quality in a person suggests wilful, opinionated, combustible energy. It's an evocative if old-fashioned way to describe someone whose mouth runs faster than their good sense.
The new recruit was talented but hot-mouthed, constantly arguing with senior officers over decisions that weren't his to question.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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(slang, idiomatic) Headstrong or ungovernable.
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