Englishscary
adjective
informal
we set off for the graveyard—it was really scary:
frightening, scaring, hair-raising, terrifying, petrifying, spine-chilling, blood-curdling, chilling, horrifying, alarming, appalling, daunting, formidable, fearsome, nerve-racking, unnerving;
eerie, sinister;
informal creepy, spine-tingling, spooky, hairy.