honest, innocent and willing to trust people synonym naive单纯的;天真的 You're too ingenuous. 你太老实了。 an ingenuous smile 纯真的微笑 It is ingenuous to suppose that money did not play a part in his decision. 如果以为他的决定没有金钱的因素,那就太天真了。
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.).