Here is a context clues worksheet on the verb fraternize. It means “to associate or mingle as brothers or on fraternal terms,” “to associate on close terms with members of a hostile group especially when contrary to military orders,” and “to be friendly or amiable.” The context clues in the sentences in this worksheet point to the first and third of these definitions, the middle definition not at all. I thought trying to include that would make the worksheet a bit too busy. Also, I remember thinking the middle definition might require its own set of context clues sentences, and might be best pegged to a lesson where the definition comes into play.
Also, this is one of those verbs used only transitively. So don’t bother with your direct object; you don’t need it.
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.