Webster's Revised Unabridged Dictionary · 1913

Scare

Scare , transitive verb

[Old English skerren, skeren, Icelandic skirra to bar, prevent, skirrask to shun, shrink from; or from Old English skerre, adj., scared, Icelandic skjarr; both perhaps akin to English sheer to turn.]

To frighten; to strike with sudden fear; to alarm.
The noise of thy crossbow Will scare the herd, and so my shoot is lost. — Shakespeare
Collocations (2)
To scare away , to drive away by frightening.
To scare up , to find by search, as if by beating for game. [Slang]

Scare , noun

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