Englishharmful
adjective
the harmful effects of cigarette smoking |
a harmful influence:
damaging, injurious, detrimental, dangerous, deleterious, unfavorable, negative, disadvantageous, unhealthy, unwholesome, hurtful, baleful, wounding, destructive, environmentally unfriendly;
noxious, hazardous, poisonous, toxic, deadly, lethal;
bad, evil, malign, malignant, malevolent, corrupting, subversive, pernicious;
rare baneful, maleficent, malefic.
▷antonyms beneficial; harmless.