The Collaborative International Dictionary of English v.0.48:

Affrightment \Af*fright"ment\, n.
   Affright; the state of being frightened; sudden fear or
   alarm. [Archaic]
   [1913 Webster]

         Passionate words or blows . . . fill the child's mind
         with terror and affrightment.            --Locke.
   [1913 Webster]