The Collaborative International Dictionary
blabbermouthed
blabbermouthed \blabbermouthed\ adj.
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tending to talk excessively.
Syn: bigmouthed, blabby, talkative.
-
prone to revealing secrets; -- of people.
Syn: leaky, talebearing(prenominal), tattling(prenominal).
WordNet
blabbermouthed
adj. unwisely talking too much [syn: bigmouthed, blabby, talkative]
prone to communicate confidential information [syn: leaky, talebearing(a), tattling(a)]