To talk excessively, foolishly, or without filter — the verbal equivalent of a leaky faucet that won't shut off. 'Blabber' covers everything from gossiping to rambling incoherently to accidentally spilling secrets you were supposed to keep. Someone who blabbers can't hold information in; it just tumbles out, often at the worst possible moment. The word has a wonderfully onomatopoeic quality — it sounds exactly like the messy, undisciplined speech it describes.
She blabbered the whole surprise party plan to his sister within five minutes of hearing about it.
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To blather; to talk foolishly or incoherently.
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To blab; to reveal a secret.
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(UK, obsolete) To stick out one's tongue.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.