EXTROVERT definition: 1. an energetic person who enjoys being with other people: 2. energetic and enjoying being with…. Learn more. Extroversion is a personality type that describes people who are energized by outside stimuli . Unlike introverts, who retreat inward to charge their batteries, extroverts come most alive when interacting with people, places and things around them. What is an extrovert? An extrovert is a person who gains energy from interacting with people . They tend to do group activities and seek new sensations, but they may find it difficult to be alone... Definition of extrovert noun from the Oxford Advanced Learner's Dictionary. a lively and confident person who enjoys being with other people opposite introvert. She's a real extrovert and loves to socialize and meet new people. Join our community to access the latest language learning and assessment tips from Oxford University Press!