Talked too much or revealed secrets that should have been kept confidential.
From blab (to talk idly), which is imitative in origin, entered English around 1500. The imitative 'b' sound matches casual chatter.
The word 'blabbermouth' emerged as a specific insult in 1930s American slang, and it became the name of Warner Bros.' famously indiscreet Looney Tunes character in 1942.
'Blabber' and 'chatter' have been historically applied disparagingly to women's speech since the 16th century, pathologizing female vocalization as excessive, frivolous, or uncontrolled.
Use neutrally without gendered tone. Avoid pairing with female subjects stereotypically; consider whether the judgment of 'excessive talk' reflects bias rather than fact.
["disclosed","revealed","divulged","spoke"]
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