"talkative" in the adjective sense
1. chatty, gabby, garrulous, loquacious, talkative, talky
full of trivial conversation
"kept from her housework by gabby neighbors"
2. bigmouthed, blabbermouthed, blabby, talkative
unwisely talking too much
3. expansive, talkative
friendly and open and willing to talk
"wine made the guest expansive"
Source: WordNet® (An amazing lexical database of English)
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