Deleterious
Pronunciation : Del`e*te"ri*ous
Part of Speech : a.
Etymology : [LL. deleterius noxious, Gr. delere to destroy.]
Definition : Defn: Hurtful; noxious; destructive; pernicious; as, a deleterious plant or quality; a deleterious example. -- Del`e*te"ri*ous*ly, adv. -- Del`e*te"ri*ous*ness, n.
Source : Webster's Unabridged Dictionary, 1913