The child-like ingenuousness with which his visitor spoke, her modest fearlessness, her truthfulness which put all artifice aside, her entire forgetfulness of herself in her earnest quiet holding to the object with which she had come; all this, together with her reliance on his easily given promise — which in itself shamed him — presented something in which he was so inexperienced, and against which he knew any of his usual weapons would fall so powerless; that not a word could he…
There are no more uses of "ingenuous" in the book.
Show samples from other sources
She plays a wide-eyed, ingenuous schoolgirl forced to grow up too quickly.
The face of the old man was stern, hard-featured, and forbidding; that of the young one, open, handsome, and ingenuous.
Dickens, Charles -- The Life and Adventures of Nicholas Nickleby