bigmouthed

big·mouthed

B0241900 (bĭg′mouthd′, -moutht′)adj.1. Slang Speaking loudly or indiscreetly; loudmouthed.2. Having a large mouth.

big•mouthed

(ˈbɪgˌmaʊθt, -ˌmaʊðd)

adj. 1. very talkative; indiscreet; loudmouthed. 2. having a very large mouth. [1640–50]

Thesaurus

Adj.

1.

bigmouthed - unwisely talking too much blabbermouthed, blabby, talkativeindiscreet - lacking discretion; injudicious; "her behavior was indiscreet at the very best"