Synonyms for Communicative (same or very similar meaning)
WordNet sense 1 (friendly and open and willing to talk):
expansive, talkative
WordNet sense 2 (readily communicated):
communicable
WordNet sense 3 (prone to friendly informal communication):
chatty
WordNet sense 4 (able or tending to communicate):
communicatory
From the ODE community, based on WordNet
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