Synonyms of blabbermouth
Copyright © 2016 by HarperCollins Publishers. All rights reserved.
• She was a vicious old gossip.
busybodybabblerprattlerchatterbox (informal)quidnuncbletherchattererscandalmongerblatherskitenewsmonger (old-fashioned)gossipmongertattletale (US, Canadian)
loudmouth (informal)If you describe someone as a loudmouth, you are critical of them because they talk a lot, especially in an unpleasant, offensive, or stupid way.
• He is a loudmouth, and very spoilt too.
bigmouth (slang)noisilyswaggererbragblustererwindbag (slang)braggartbraggadociogasbag (informal)blowhard (informal)bullshitter (taboo, slang)bullshit artist (taboo, slang)figjam (Australian, slang)
tattletale (US, Canadian)a scandalmonger or gossip
Thesaurus for blabbermouth from the Collins English Thesaurus