- faze: disturb the composure of
- (unnerved) deprived of courage and strength; "the steeplejack, exhausted and unnerved, couldn't hold on to his dangerous perch much longer"
- (unnerving) formidable: inspiring fear; "the formidable prospect of major surgery"; "a tougher and more redoubtable adversary than the heel-clicking, jackbooted fanatic"- G.H.Johnston; "something unnerving and prisonlike about high grey wall"
- To deprive of nerve, force, or strength; to weaken; to enfeeble; To upset