bigmouthed

[ big-moutht, -mouth d ]
/ ˈbɪgˌmaʊθt, -ˌmaʊðd /

adjective

having a very large mouth.
very talkative; loud-mouthed.

Origin of bigmouthed

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019