unnerved
1. [ adjective ] deprived of courage and strength
Examples:

"the steeplejack, exhausted and unnerved, couldn't hold on to his dangerous perch much longer"

Related terms: afraid
Similar spelling:   unnerve
  unreproved
  unrevived
  unrevised
  unreviled
  unrevealed
  unrepressed
  unrefreshed
  unnerving
  unrefined
  unrebuked
  unwearable
  unhearable