to prepare yourself physically or mentally for something unpleasant: Before working with people as a psychiatrist you need to ___ ____ for tough cases through your own therapy.
to provide information about something or to make something easier to understand: He was never able to __ __ __how an average kid from upstate New York came to commit the worst act of domestic terrorism in history.
3. To behave wildly. You only turn 21 once, so I plan to go nuclear at my birthday party this weekend! Have you seen the way he's spent money lately? It's like he's gone nuclear!