My pick word: Ingenue (stock character)

The ingénue ( /ˈænʒənuː/) is a stock character in literature, film, and a role type in the theatre; generally a girl or a young woman who is endearingly innocent and wholesome. Ingenue may also refer to a new young actress or one typecast in such roles. The term comes from the French adjective ingénu meaning “ingenuous” or innocent, virtuous, and candid. The term may also imply a lack of sophistication and cunning.