prejudicial

1 causing or capable of causing harm pretrial publicity that may be extremely prejudicial to a defendant's right to a fair trial Synonyms adverse, bad, baleful, baneful, damaging, dangerous, deleterious, detrimental, evil, hurtful, ill, injurious, mischievous, nocuous, noxious, pernicious, harmful, 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

2 opposed to one's interests the defense will try to counterbalance the mass of prejudicial evidence presented by the prosecution Synonyms counter, disadvantageous, hostile, inimical, negative, adverse, unfavorable, unfriendly, unsympathetic, untowardRelated 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, resistingNear 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, hospitableAntonyms advantageous, favorable, friendly, positive, supportive, sympathetic, well-disposed