adj, noun, slang ·Moderate ·College level

Definitions

Noun

1. 1
   One who talks too much or says things which should not be said. derogatory, informal, often

   "Bigmouth strikes again / And I've got no right to take my place / With the human race"

Adjective

1. 1
   Applied to various creatures that have a large mouth. not-comparable

Synonyms

All synonyms

finkgrassinformantloudmouthnarkrat

Example

More examples

"Tom is a bigmouth, but a candyass."

Etymology

From big + mouth.

Related phrases

bigmouth buffalobigmouth gobybigmouth rocksnailbigmouth shinerbigmouth skate

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.