frighten out of wits

frighten somebody out of their wits

also scare somebody out of their wits
to cause extreme fear in someone Don't sneak up behind me like that – you frightened me out of my wits!
See also: frighten, of, out, wit

frighten/scare somebody out of their wits

to make someone very frightened Don't shout like that - you scared me out of my wits!
See also: frighten, of, out, wit