adj. 25B6; adjective TERRIFYING, horrifying, alarming, startling, chilling, spine-chilling, hair-raising, blood-curdling, disturbing, unnerving, intimidating, daunting, dismaying, upsetting, harrowing, traumatic; eerie, sinister, fearsome, nightmarish, macabre, menacing; Scottish eldritch; informal scary, spooky, creepy, hairy.
FRIGHTENING
Meaning of FRIGHTENING in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012