ingenuous

Từ điển Oxford Advanced Learner 8th

in·genu·ous BrE [ɪnˈdʒenjuəs] NAmE [ɪnˈdʒenjuəs] adjective (formal, sometimes disapproving)
honest, innocent and willing to trust people
Syn: ↑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
Derived Word: ↑ingenuously

Word Origin:
[ingenuous ingenuously] late 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.).

• Từ đồng nghĩa / Synonyms:
  innocent, artless
• Từ trái nghĩa / Antonyms:
  disingenuous, artful