| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | hideous, scary |
| Synonyms: | cruel, demonic, devilish, diabolical, eerie, fiendish, frightening, ghastly, grim, grisly, gruesome, horrible, macabre, monstrous, morbid, revolting, spine-chilling, spooky, terrifying |
| Main Entry: | intimidating |
| Part of Speech: | adjective |
| Definition: | threatening |
| Synonyms: | aggressive, bullying, frightening, pressuring, terrifying, terrorizing |
| Main Entry: | macabre |
| Part of Speech: | adjective |
| Definition: | eerie; deathlike |
| Synonyms: | cadaverous, deathly, dreadful, frightening, frightful, ghastly, ghostly, ghoulish, grim, grisly, gruesome, hideous, horrible, horrid, lurid, morbid, offensive, scary, spookish, spooky, terrible, unearthly, weird |
| Notes: | macabre means shockingly repellent or inspiring horror; bizarre means odd or unusual |
| Antonyms: | common, living, normal |
| Main Entry: | menacing |
| Part of Speech: | adjective |
| Definition: | intimidating, ominous |
| Synonyms: | alarming, approaching, dangerous, frightening, imminent, impending, intimidatory, looming, louring, lowering, minacious, minatory, overhanging, threatening |
| Antonyms: | aiding, assisting, helping, unthreatening |
| Main Entry: | truculent |
| Part of Speech: | adjective |
| Definition: | belligerent, hateful |
| Synonyms: | abusive, aggressive, antagonistic, bad-tempered, barbarous, bellicose, browbeating, brutal, bullying, caustic, combative, contentious, contumelious, cowing, cross, defiant, ferocious, fierce, frightening, harsh, hostile, inhuman, inhumane, intimidating, invective, mean, militant, mordacious, mordant, obstreperous, opprobrious, ornery*, pugnacious, quarrelsome, rude, savage, scathing, scrappy, scurrilous, sharp, sullen, terrifying, terrorizing, trenchant, violent, vituperative, vituperous |
| Antonyms: | cooperative, gentle, mild, nice, tame |
| Main Entry: | unearthly |
| Part of Speech: | adjective |
| Definition: | supernatural; very strange |
| Synonyms: | abnormal, absurd, appalling, demoniac, devilish, eerie, ethereal, extraordinary, fiendish, frightening, funereal, ghastly, ghostly, ghoulish, hair-raising, haunted, heavenly, hyperphysical, miraculous, nightmarish, not of this world, phantom, preternatural, ridiculous, scary, sepulchral, spectral, spooky*, sublime, superhuman, uncanny, ungodly, unholy, unreasonable, weird |
| Antonyms: | earthly, natural, physical |
| Main Entry: | unspeakable |
| Part of Speech: | adjective |
| Definition: | very bad; beyond description |
| Synonyms: | abominable, alarming, appalling, atrocious, awful, beastly, beyond words, calamitous, detestable, dire, disgusting, dreadful, evil, execrable, fearful, frightening, frightful, heinous, horrible, horrid, incommunicable, inconceivable, indefinable, indescribable, ineffable, inexpressible, inhuman, loathsome, monstrous, nameless, obnoxious, odious, offensive, outrageous, overwhelming, preternatural, repellent, repugnant, repulsive, revolting, shocking, unbelievable, unimaginable, unutterable |
| Antonyms: | good, nice |
| Main Entry: | redoubtable |
| Part of Speech: | adjective |
| Definition: | dreadful |
| Synonyms: | awesome, brave, courageous, fearful, fearsome, formidable, frightening, illustrious, imminent, terrible, valiant |
| Main Entry: | alarming |
| Part of Speech: | adjective |
| Definition: | causing fear |
| Synonyms: | dangerous, disquieting, distressing, disturbing, frightening, frightful, startling |