Synonyms and Antonyms of harmful
causing or capable of causing harm
- DDT has been proven to be extremely harmful to the environment
adverse, bad, baleful, baneful, damaging, dangerous, deleterious, detrimental, evil, hurtful, ill, injurious, mischievous, nocuous, noxious, pernicious, prejudicial, wicked
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, ruinous
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, nonvenomous
