Englishhair-raising
adjective
I thought ski jumping was hair-raising, but rafting beats it:
terrifying, frightening, petrifying, alarming, chilling, horrifying, shocking, scaring, spine-chilling, blood-curdling, appalling, dreadful, fearsome, nightmarish;
eerie, sinister, weird, ghostly, unearthly;
Scottish eldritch;
informal hairy, spooky, scary, creepy, spine-tingling.
▷antonyms relaxing, pleasant.