It’s Merriam-Webster’s Word of the Day today, to here is a context clues worksheet on the verb ferret. It’s used both intransitively and transitively. You might note for students that in this sense of the verb’s use–i.e., “to find an bring to light by searching”–ferret always appears with the preposition out.
So, a new word with point of usage if you need them; then again, perhaps students will never have need of this word.
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.