| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | fiendish; unpleasant |
| Synonyms: | abominable, accursed, atrocious, barbarous, cruel, damnable, damned, demonic, devilish, diabolical, horrible, infernal, monstrous, nefarious, satanic, terrible, vicious, wicked |
| Main Entry: | cruel |
| Part of Speech: | adjective |
| Definition: | vicious, pitiless; causing pain |
| Synonyms: | atrocious, barbarous, bestial, bitter, bloodthirsty, brutal, brutish, callous, cold-blooded, degenerate, demoniac, depraved, evil, excruciating, ferocious, fierce, flinty, hard, hard-hearted, harsh, hateful, heartless, hellish, implacable, inexorable, inhuman, inhumane, malevolent, merciless, monstrous, painful, pernicious, poignant, rancorous, relentless, revengeful, ruthless, sadistic, sinful, spiteful, tyrannical, unfeeling, unkind, unnatural, unrelenting, vengeful, vicious, virulent, wicked |
| Antonyms: | charitable, compassionate, considerate, feeling, gentle, kind, merciful, sympathetic, thoughtful, uncruel |
| Main Entry: | dark |
| Part of Speech: | adjective |
| Definition: | evil, satanic |
| Synonyms: | atrocious, bad, corrupt, damnable, foul, hellish, horrible, immoral, infamous, infernal, nefarious, sinful, sinister, vile, wicked |
| Antonyms: | good, moral |
| Main Entry: | demonic |
| Part of Speech: | adjective |
| Definition: | evil |
| Synonyms: | aroused, bad, crazed, demoniac, demoniacal, devilish, diabolic, diabolical, fiendish, fired, frantic, frenetic, frenzied, hellish, impious, infernal, insane, inspired, mad, maniacal, manic, possessed, satanic, serpentine, unhallowed, violent, wicked |
| Antonyms: | angelic, godlike, good, moral |
| Main Entry: | devilish |
| Part of Speech: | adjective |
| Definition: | wicked |
| Synonyms: | Mephistophelian, accursed, atrocious, bad, brutish, cloven-footed, cursed, damnable, demoniac, demonic, detestable, diabolic, diabolical, evil, execrable, fiendish, hellborn, hellish, infernal, inhuman, iniquitous, nefarious, satanic, serpentine, unhallowed, villainous |
| Antonyms: | angelic, godlike, good, moral |
| Main Entry: | diabolic |
| Part of Speech: | adjective |
| Definition: | evil, fiendish |
| Synonyms: | Mephistophelian, atrocious, cruel, damnable, demoniac, demonic, devilish, hellish, impious, infernal, monstrous, nasty, nefarious, satanic, serpentine, shocking, unhallowed, unpleasant, vicious, vile, villainous, wicked |
| Antonyms: | gentle, kind, moral, nice |
| Main Entry: | fiendish |
| Part of Speech: | adjective |
| Definition: | diabolical |
| Synonyms: | atrocious, beastly, brutish, cruel, demonic, demonical, devilish, diabolic, evil, hellish, inhuman, malicious, nefarious, sadistic, satanic, savage, vicious, wicked |
| Main Entry: | infernal |
| Part of Speech: | adjective |
| Definition: | damned; underworld |
| Synonyms: | accursed, blamed, blasted, chthonian, confounded, cursed, cussed, damnable, demonic, devilish, diabolical, execrable, fiendish, hellish, lower, malevolent, malicious, monstrous, nether, satanic, subterranean, sulphurous, wicked |
| Antonyms: | heavenly, otherworldly |
| Main Entry: | malevolent |
| Part of Speech: | adjective |
| Definition: | hateful |
| Synonyms: | bad-natured, baleful, catty, despiteful, dirty, evil, evil-minded, hellish, hostile, lousy, malicious, malign, malignant, murder, murderous, pernicious, poison, rancorous, rough, sinister, spiteful, tough, vengeful, vicious, vindictive, waspish, wicked |
| Notes: | while malevolent suggests deep and lasting dislike, malicious usually means petty and spiteful |
| Antonyms: | amiable, harmless, kind, liking, loving |