noun. An innocent, unsophisticated, naïve, wholesome girl or young woman.

noun. A dramatic role of such a woman; an actress playing such a role.

"As always, the ingenue was a docile, saintly (with one slip) place-holder, but Elena Shaddow, who was the girl in The Light in the Piazza did her level best with her, and has a lovely, clear voice."

ingenuous  

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