make your hair stand on end

make (one's) hair stand on end

To scare or horrify someone. The screams coming from the old, dark house made my hair stand on end. When we go camping, every little noise outside my tent makes my hair stand on end. It could be a bear, after all!
See also: end, hair, make, on, stand

make your hair stand on end

If something makes your hair stand on end, it makes you very frightened or shocked. The first ten minutes of the film made my hair stand on end. Things happened that night that would make your hair stand on end. Note: When someone is very frightened, you can say that their hair stands on end. `What's that?' Chet's hair stood on end as an eerie howling came to his ears.
See also: end, hair, make, on, stand