Synonyms of ingenuous in English:
ingenuous or disingenuous?Although ingenuous is sometimes used as though it meant disingenuous, the words are almost opposite in meaning. Ingenuous means ‘innocent, unsuspecting, and straightforward’ ( his love for her was plain on his ingenuous face). Disingenuous, on the other hand, means ‘dishonest and devious’, often suggesting that someone is concealing something ( the Minister's argument is disingenuous). The confusion may be due partly to the similarity between ingenuous and ingenious, the idea being that concealment and insincerity call for clever planning.