bigmouth
Longman Dictionary of Contemporary English 5++LDOCE 5++big·mouth /ˈbɪɡmaʊθ/ noun [countable] informalTELL A SECRET someone who cannot be trusted to keep secrets 多嘴的人，守不住秘密的人 SYN gossip
Examples from the Corpus
bigmouth• If something is leaked to the press, the bigmouth will be tracked down and punished.big·mouth nounChineseSyllable
Corpus cannot who trusted keep secrets be to someone
bigmouth
big‧mouth /ˈbɪɡmaʊθ/
noun [countable]
informal someone who cannot be trusted to keep secrets
SYN gossip
big‧mouth /ˈbɪɡmaʊθ/
noun [countable]informal someone who cannot be trusted to keep secrets
SYN gossip