Synonyms for Expansive (same or very similar meaning)
WordNet sense 1 (of behavior that is impressive and ambitious in scale or scope):
grand, heroic
WordNet sense 2 (making a strong or vivid impression):
impressive
WordNet sense 3 (exaggerated feeling of well-being or elation):
euphoric
WordNet sense 4 (friendly and open and willing to talk):
talkative
From the ODE community, based on WordNet
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