Synonyms for Sociable (same or very similar meaning)
WordNet sense 1 (a party of people assembled to promote sociability and communal activity):
mixer
WordNet sense 2 (composed of sociable people or formed for the purpose of sociability):
social
WordNet sense 3 (occupied with or fond of the pleasures of good company):
convivial
WordNet sense 4 (suggestive of companionship):
companionable
From the ODE community, based on WordNet
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