Destructive1. (a.) Causing destruction; tending to bring about ruin, death, or devastation; ruinous; fatal; productive of serious evil; mischievous; pernicious; -- often with of or to; as, intemperance is destructive of health; evil examples are destructive to the morals of youth.
2. (n.) One who destroys; a radical reformer; a destructionist.
Thesaurus Entries
adverse, annihilative, antithetical, bad, baleful, baneful, black, brutal, calamitous, cataclysmal, cataclysmic, catastrophic, catching, communicable, condemnatory, conflicting, consuming, consumptive, contagious, contradictory, contrary, critical, damaging, dangerous, deadly, death-bringing, deathful, deathly, deleterious, demolishing, demolitionary, depredatory, derogatory, desolating, destroying, detrimental, devastating, dire, disapproving, disastrous, disparaging, doomful, envenomed, fatal, fateful, fell, feral, fratricidal, grievous, harmful, hurtful, infectious, infective, injurious, internecine, killing, lethal, malign, malignant, mephitic, miasmal, miasmatic, miasmic, mortal, negative, nihilist, nihilistic, noxious, opposed, opposing, pernicious, pestiferous, pestilential, poisonous, ravaging, ruining, ruinous, savage, self-destructive, shattering, subversionary, subversive, suicidal, toxic, toxicant, toxiferous, tragic, unfavorable, unwholesome, vandalic, vandalish, vandalistic, venenate, veneniferous, venenous, venomous, virulent, wasteful, wasting, withering, wreckful