scare (one) out of (one's) mind

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scare (one) out of (one's) mind

To give one a very serious shock or fright. Hyperbolically alludes to causing one to lose one's mind with fright. Don't sneak up on me like that, you nearly scared me out of my mind! That car accident seems to have scared Janet out of her mind—she's still shaken by it.
See also: mind, of, out, scare