Thesaurus

harmful

adjective

Synonyms and Antonyms of harmful

causing or capable of causing harm

DDT has been proven to be extremely harmful to the environment

Synonyms of harmful

adverse, bad, baleful, baneful, damaging, dangerous, deleterious, detrimental, evil, hurtful, ill, injurious, mischievous, nocuous, noxious, pernicious, prejudicial, wicked

Words Related to harmful

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

Near Antonyms of harmful

advantageous, beneficial, useful

favorable, good, propitious

curative, healthful, healthy, helpful, palliative, remedial, salubrious, salutary, wholesome

noncorrosive, nondestructive, nonfatal, noninfectious, nonlethal, nonpoisonous, nonpolluting, nontoxic, nonvenomous

Antonyms of harmful

anodyne, benign, harmless, hurtless, innocent, innocuous, inoffensive, safe

Learn More about harmful

Dictionary: Definition of harmful Spanish Central: Translation of harmful Nglish: Translation of harmful for Spanish speakers Britannica English: Translation of harmful for Arabic speakers

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biannual

occurring twice a year or every two years

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