1. 天真的，无邪的，单纯的，朴实的，幼稚的，不狡诈的
2. 率直的，坦白的，直率的，坦率的，公开的，耿直的，正直的
3. 无保留的，无拘束的
4. 高贵的，品格高尚的

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

   "an ingenuous admission of responsibility"
   

2. lacking in sophistication or worldliness;

   "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"
   

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

e.g. He seemed tooingenuous for a reporter...
作为一名记者，他太老实了。
e.g. Withingenuous sincerity, he captivated his audience.
他以自己的率真迷住了观众。

1. 直率的：它的设计是相当直率的(ingenuous)(或者说是有创造性的):长期以来,PC机上的并行端口只用来作为单向打印机端口;也即,8根数据线只能用来从PC机向外设发送数据,而不是反向使用.

2. 直率的, 天真的：37) ingenious 有独创性的 |ingenuous 直率的, 天真的 | 38) manly 男人气派的

3. 坦白,老实,诚朴的：ingenious 有发明天才,灵敏的 |ingenuous 坦白,老实,诚朴的 | ingrained 根深蒂固,深染的

4. ingenuous

4. 坦白,诚朴的：ingenious 智巧,灵敏的 |ingenuous 坦白,诚朴的 | progenitor 前辈,祖先