bejesus

beat the bejesus out of someone hit someone very hard or for a long time.

scare the bejesus out of someone frighten someone very much.

2001GQ This place is going to scare the bejesus out of the fuddy-duddy Sloaney-Pony set.

☞ Bejesus is an alteration of the exclamation by Jesus! It is often found in its Anglo-Irish form bejasus or bejabers.