An innocent, unsophisticated, naïve, wholesome girl or young woman.(noun)
A dramatic role of such a woman; an actress playing such a role.(noun)
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Use "ingénue" in a sentence
"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."
"But you can bet they're wishing that their ingenue was a little less ripe and a lot more bashful:"
"Fifty years ago, that stage was the Met, the opera was Don Giovanni, and the ingenue was a 19-year-old soprano from the Bronx, Roberta Peters."