An extrovert is a friendly person who enjoys talking to and being with other people. Extroverts love parties, talking on the phone, and meeting new people.
This noun has a specialized sense in psychology, and its opposite is introvert.. Psychologists sometimes kick it old school and spell it extravert. As a psychological term, it was borrowed from German extravertiert, from the prefix extra- "outside, beyond" plus Latin vertere "to turn." Thanks, Carl Jung! Its opposite is introvert, which means shy or turned inward.