WordNet 3.0 Copyright © 2006 by Princeton University.
- 1. harmful (vs. harmless), abusive, bad, bruising, deleterious, hurtful, injurious, calumniatory, calumnious, defamatory, denigrative, denigrating, denigratory, libellous, libelous, slanderous, catastrophic, ruinous, counterproductive, damaging, detrimental, prejudicial, prejudicious, ill, insidious, pernicious, subtle, mischievous, nocent, stabbing, wounding, destructive, disadvantageous, malign, noxious, offensive, painful, toxic, unwholesome
- usage: causing or capable of causing harm; "too much sun is harmful to the skin"; "harmful effects of smoking"
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See also: harmful (Dictionary)