hair stand on end
informal The hair of your head rises stiffly upwards as a sign or result of great fright or horror.
When he heard the strange cry, his hair stood on end.
The sight of the dead man made his hair stand on end.
Compare: BLOOD RUN COLD, HEART IN ONE'S MOUTH, HEART STAND STILL, JUMP OUT OF ONE'S SKIN, SPINE-CHILLING.

[TahlilGaran] English Idioms Dictionary ▲