Other Words for Frightening
Frightening as a Noun has these synonyms:
terrifying, alarming, startling, shocking, petrifying, horrifying, dismaying, appalling, unnerving, dire, distressing, daunting, intimidating, formidable, frightful, fearful, hair-raising, harrowing, dreadful, scary, spooky
Example: Skydiving can be a frightening experience. The sight of their mangled bodies was frightening.
Frightening as a Verb has these synonyms:
awful, dreadful, terrible, disagreeable, atrocious, abhorrent, loathsome, grisly, ghastly, lurid, macabre, horrible, horrifying, horrid, horrendous, nasty, hideous, vile, unspeakable, nauseating, nauseous, repugnant, repulsive, shocking, revolting, abomin
Example: Brixton police report a frightful crime of decapitation.