Definition of ingenuous adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ɪnˈdʒenjuəs//
; NAmE NAmE//ɪnˈdʒenjuəs//
(formal, sometimes disapproving) Honest
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honest, innocent and willing to trust people synonym naive You're too ingenuous. an ingenuous smile It is ingenuous to suppose that money did not play a part in his decision. compare disingenuous See related entries: Honest Word Originlate 16th cent.: from Latin ingenuus literally ‘native, inborn’, from in- ‘into’ + an element related to gignere ‘beget’. The original sense was ‘noble, generous’, giving rise to ‘honourably straightforward, frank’, hence ‘innocently frank’ (late 17th cent.).
See the Oxford Advanced American Dictionary entry: ingenuous