| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | abusive, hateful |
| Synonyms: | abasing, calumniatory, contemptuous, contumelious, damaging, debasing, defamatory, defaming, denigrating, depreciative, derogative, despicable, despiteful, detractive, disgracing, dishonoring, disparaging, humiliating, hurting, injuring, injurious, insolent, insulting, invective, libeling, malevolent, malign, malignant, maligning, notorious, offending, offensive, pejorative, reproaching, reviling, scandalous, scurrilous, shaming, spiteful, truculent, vile, vitriolic, vituperative, vulgar |
| Antonyms: | complimentary, flattering, kind, nice, praising |
| Main Entry: | pestilent/pestilential |
| Part of Speech: | adjective |
| Definition: | dangerous, |
| Synonyms: | contagious, contaminating, corrupting, deadly, deleterious, destructive, detrimental, diseased, evil, fatal, harmful baneful, infectious, injurious, lethal, mortal, noxious, pernicious, pestiferous, ruinous, tainting, troublesome, vicious |
| Antonyms: | clean, healthy, hygienic, safe, sanitary |
| Main Entry: | prejudicial |
| Part of Speech: | adjective |
| Definition: | harmful, undermining |
| Synonyms: | bad, biased, bigoted, counterproductive, damaging, deleterious, detrimental, differential, disadvantageous, discriminatory, evil, hurtful, inimical, injurious, mischievous, nocuous, unfavorable, unjust |
| Antonyms: | approving, fair, just, unbiased |
| Main Entry: | ruinous |
| Part of Speech: | adjective |
| Definition: | disastrous, devastating |
| Synonyms: | annihilative, baleful, baneful, calamitous, cataclysmic, catastrophic, crippling, damaging, deadly, deleterious, depleting, dire, draining, exhausting, extravagant, fatal, fateful, harmful, hurtful, immoderate, impoverishing, injurious, murderous, noxious, pernicious, shattering, suicidal, unfortunate, wasteful, withering, wrackful |
| Antonyms: | advantageous, assisting, beneficial, helpful |
| Main Entry: | sinister |
| Part of Speech: | adjective |
| Definition: | nasty, menacing |
| Synonyms: | adverse, apocalyptic, bad, baleful, baneful, blackhearted, corrupt, deleterious, dire, disastrous, dishonest, disquieting, doomful, evil, foreboding, harmful, hurtful, ill-boding, inauspicious, injurious, lowering, malefic, malevolent, malign, malignant, mischievous, obnoxious, ominous, pernicious, perverse, poisonous, portentous, threatening, unfavorable, unfortunate, unlucky, unpropitious, woeful |
| Antonyms: | benevolent, kind, nice |
| Main Entry: | unfair |
| Part of Speech: | adjective |
| Definition: | prejudiced, wrongful |
| Synonyms: | arbitrary, bad, base, biased, bigoted, blameworthy, cheating, criminal, crooked, cruel, culpable, discreditable, discriminatory, dishonest, dishonorable, foul, grievous, illegal, immoral, improper, inequitable, inexcusable, iniquitous, injurious, low, mean, one-sided, partial, partisan, petty, shameful, shameless, uncalled-for, undue, unethical, unjust, unjustifiable, unlawful, unprincipled, unreasonable, unrightful, unscrupulous, unsporting, unwarranted, vicious, vile, wicked, wrong |
| Antonyms: | fair, honest, just, unprejudiced |
| Main Entry: | virulent |
| Part of Speech: | adjective |
| Definition: | poisonous, lethal |
| Synonyms: | baneful, deadly, destructive, fatal, harmful, infective, injurious, malign, malignant, mephitic, pernicious, poison, septic, toxic, toxicant, unhealthy, unwholesome, venomous |
| Antonyms: | harmless, healthy, nonpoisonous |
| Main Entry: | nocuous |
| Part of Speech: | adjective |
| Definition: | dangerous |
| Synonyms: | damaging, deadly, harmful, injurious, noxious |
| Main Entry: | wicked |
| Part of Speech: | adjective |
| Definition: | destructive, troublesome |
| Synonyms: | acute, agonizing, awful, barbarous, bothersome, chancy, crashing, dangerous, difficult, distressing, dreadful, fearful, fierce, galling, harmful, hazardous, injurious, intense, mean, mighty, offensive, outrageous, painful, perilous, pesky, risky, severe, terrible, treacherous, troublous, trying, ugly, uncivilized, unconscionable, ungodly, unhealthy, unholy, unpleasant, unsound, vexatious |
| Antonyms: | aiding, assisting, helpful, useful, worthwhile |