From Longman Dictionary of Contemporary Englishingénuein‧gé‧nue /ˈænʒeɪnjuː $ ˈændʒənuː/ noun [countable] ALCHILDa young girl, especially in a film or play, who has not had much experience of lifeOrigin ingénue (1800-1900) French Latin ingenuus; → INGENUOUS