big mouth
noun
[ ˈbɪɡ maʊθ ]
• an indiscreet or boastful person.
• "I think Burke is a big mouth and a blowhard"
talk big
• talk boastfully or overconfidently.
• "Henry was new to the job but he was already talking big"
Similar:
brag,
boast,
crow,
bluster,
exaggerate,
blow one's own trumpet,
shoot one's mouth off,
swank,
show off,
skite,
big-note oneself,
