- harmful
- adj1. dangerous, detrimental, deleterious, pernicious; injurious, hurtful, damaging, baneful; ruinous, destructive, fell, extirpative; unhealthy, insalubrious, unwholesome, noxious, poisonous, venomous, septic, toxic, virulent, corrosive.2. bad, evil, malign, malefic, satanic; inimical, sinister, corrupting, subversive, undermining, seditious, treasonous.
A Note on the Style of the synonym finder. 2014.