As JS said, terms for Adepts change depending on their role. Even when you narrow it down to adepts following the Way of the Warrior, for instance, there's a variety. Someone who focuses on devastating punches and kicks may be BruceLee. Someone with a penchant for acrobatics could be Jackie, or Chan. Someone who pushes everything to shooting could be Tex or Hawkeye, or maybe even Ash, if they prefer shotguns. And so on.
There's basically no universal slang for adepts, because they are so disparate in their expressions, and they're generally harder to pick out than wizworms, who have a tendency to draw attention to themselves.