frighten hell out of smb.

(тж. frighten smb. out of his wits)

   пepeпугaть кoгo-л. дo cмepти, дo пoтepи coзнaния; cм. тж. scare smb. out of his senses

    She was obviously frightened out of her wits and nothing that he could say helped (W. S. Maugham)