Synonyms of ingenuous

1. ingenuous (vs. disingenuous), artless, candid, open, heart-to-heart, undistorted, naive#1, naif, sincere: usage: characterized by an inability to mask your feelings; not devious; "an ingenuous admission of responsibility"
2. innocent, ingenuous, naive (vs. sophisticated), naif: usage: lacking in sophistication or worldliness; "a child's innocent stare"; "his ingenuous explanation that he would not have burned the church if he had not thought the bishop was in it"