scare the living daylights out of someone

scare the (living) daylights out of (one)

To shock or frighten one very suddenly or severely. Don't sneak up on me like that—you scared the living daylights out of me! That car accident seems to have scared the daylights out of Janet. She's still pretty badly shaken by it.
See also: daylight, of, out, scare
Farlex Dictionary of Idioms.

scare the living daylights out of someone

or

scare the daylights out of someone

If someone or something scares the living daylights out of you or scares the daylights out of you, they frighten you very much. You scared the living daylights out of me last night with all that screaming. Bears appear in back gardens and garages, where they scare the daylights out of residents. Note: The verb frighten is sometimes used instead of scare. A tremendous wind swept off the land and frightened the living daylights out of us.
See also: daylight, living, of, out, scare, someone
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • scare the (living) daylights out of (one)
  • frighten the (living) daylights out of (someone)
  • frighten the daylights out of
  • scare the wits out of (one)
  • scare (one) out of (one's) wits
  • scare out of one's wits
  • frighten the life out of
  • frighten the life out of (one)
  • frighten the life out of someone
  • frighten/scare the life out of somebody
References in periodicals archive
In fact, you could scare the living daylights out of someone by a simple confession today.