Synonyms and related words :
alarming, appalling, awing, browbeating, bulldozing, bullying, chilling, cowing, daunting, demoralization, deterrent, deterring, dire, disconcerting, discouraging, disheartening, dismaying, disquieting, distressing, dreadful, fear-inspiring, fearful, fearsome, formidable, frightful, hair-raising, harrowing, hectoring, horrifying, intimidating, intimidation, overawing, petrifying, psychological warfare, scaring, scary, shocking, spooky, startling, terrifying, war of nerves