Synonyms and Antonyms of adverse
1 opposed to one's interests <all the adverse publicity really caused the movie star's popularity to suffer> Synonyms counter, disadvantageous, hostile, inimical, negative, prejudicial, unfavorable, unfriendly, unsympathetic, untoward Related Words bad, baleful, baneful, evil; damaging, deleterious, destructive, detrimental, fatal, harmful, hurtful, ill, injurious, lethal, malignant, murderous, noxious, pernicious, poisonous, ruinous, threatening, troublesome, unhealthy, wounding; dangerous, hazardous, imperiling (or imperilling), jeopardizing, parlous, perilous, risky, unsafe; calumnious, defamatory, detractive, offensive, scathing, slanderous; antagonistic, antipathetic, inhospitable, intolerant, uncongenial, uncooperative; competing, conflicting, counteracting, countering, opposing, resistant, resisting Near Antonyms beneficial, good, helpful, propitious, useful; harmless, innocent, innocuous, inoffensive, nondestructive, nonfatal, nonlethal, nonthreatening; unresistant; tolerant, understanding; affable, agreeable, amiable, amicable, benign, benignant, complying, congenial, cordial, friendly, hospitable Antonyms advantageous, favorable, friendly, positive, supportive, sympathetic, well-disposed
2 causing or capable of causing harm <the adverse effects of the drug are too severe to allow it to be marketed> Synonyms harmful, bad, baleful, baneful, damaging, dangerous, deleterious, detrimental, evil, hurtful, ill, injurious, mischievous, nocuous, noxious, pernicious, prejudicial, wickedRelated Words hostile, inimical, unfriendly; contagious, deadly, infectious, infective, pestiferous, pestilent, pestilential, poisonous, venomous; insidious, menacing, ominous, sinister, threatening; hazardous, imperiling (or imperilling), jeopardizing, parlous, perilous, risky, unsafe, unsound; nasty, noisome, unhealthful, unhealthy, unwholesome; destructive, fatal, killer, lethal, malignant, ruinousNear Antonyms advantageous, beneficial, useful; favorable, good, propitious; curative, healthful, healthy, helpful, palliative, remedial, salubrious, salutary, wholesome; secure, sound; benignant; noncorrosive, nondestructive, nonfatal, noninfectious, nonlethal, nonpoisonous, nonpolluting, nontoxic, nonvenomousAntonyms anodyne, benign, harmless, hurtless, innocent, innocuous, inoffensive, safe
Seen and Heard
What made you want to look up adverse? Please tell us where you read or heard it (including the quote, if possible).