'Frighten' definitions:

Definition of 'frighten'

(from WordNet)
verb
Cause fear in; "The stranger who hangs around the building frightens me"; "Ghosts could never affright her" [syn: frighten, fright, scare, affright]
verb
Drive out by frightening

Definition of 'Frighten'

From: GCIDE
  • Frighten \Fright"en\, v. t. [imp. Frightened; p. pr. & vb. n. Frightening.] [See Fright, v. t.] To disturb with fear; to throw into a state of alarm or fright; to affright; to terrify. [1913 Webster]
  • More frightened than hurt. --Old Proverb. [1913 Webster]

Synonyms of 'frighten'

From: Moby Thesaurus