unnerve
— Verb
– English
~ disturb the composure of
unnerved
— Adjective
– English
~ deprived of courage and strength; "the steeplejack, exhausted and unnerved, couldn't hold on to his dangerous perch much longer"
unnerving
— Adjective
– English
~ 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"