形容词

1. 坦率的;真诚的;单纯的
If you describe someone as ingenuous, you mean that they are innocent, trusting, and honest.

1. characterized by an inability to mask your feelings
not devious

e.g. an ingenuous admission of responsibility

Synonym: artless

2. lacking in sophistication or worldliness

e.g. 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

Synonym: innocent