Here is a context clues worksheet on the verb feign, which is used both intransitively and transitively. Intransitively, it means “pretend” and “dissemble.” Transitively, and it is this definition toward which the context clues in this document point, it means “to give a false appearance of,” “induce as a false impression,” “to assert as if true,” and, again, “pretend.”
I would think this is a word students ought to know before they graduate high school. But what do you think?
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.