Scare

Part of speech: noun (n.)

Fright; esp., sudden fright produced by a trifling cause, or originating in mistake. [Colloq.]

Part of speech: verb (v.)

To frighten; to strike with sudden fear; to alarm. The noise of thy crossbow Will scare the herd, and so my shoot is lost. Shak. To scare away, to drive away by frightening. -- To scare up, to find by search, as if by beating for game. [Slang]

Synonyms: alarm; frighten; startle; affright; terrify.