[{"Bold_text": "noun", "List Items": ["an outgoing, gregarious person who thrives in dynamic environments and seeks to maximize social engagement.", "Psychology.a person characterized by extroversion ;a person concerned primarily with the physical and social environment.Compare introvert(def2) introvert(def2)."]}, {"Bold_text": "adjective", "List Items": ["having a disposition that is energized through social engagement and languishes or chafes in solitude, resulting in a personality that is gregarious, outgoing, and sociable.", "Psychology.marked by extroversion."]}, {"Bold_text": "verb (used with object)", "List Items": ["Psychology.to direct (the mind, one's interest, etc.) outward or to things outside the self."]}]