deleterious

from WordNet (r) 3.0 (2006)

deleterious
    adj 1: harmful to living things; "deleterious chemical
           additives" [syn: {deleterious}, {hurtful}, {injurious}]

from The Collaborative International Dictionary of English v.0.48

Deleterious \Del`e*te"ri*ous\, a. [LL. deleterius noxious, Gr.
   dhlhth`rios, fr. dhlei^sqai to hurt, damage; prob. akin to L.
   delere to destroy.]
   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.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

46 Moby Thesaurus words for "deleterious":
      baleful, baneful, corroding, corrosive, corrupting, corruptive,
      counterproductive, damaging, deadly, destroying, destructive,
      detrimental, disadvantageous, disserviceable, distressing, harmful,
      hurtful, injurious, lethal, malefic, malevolent, malign, malignant,
      mischievous, noisome, noxious, ominous, pernicious, poisonous,
      prejudicial, ruining, ruinous, scatheful, toxic, unadvantageous,
      unfavorable, unprofitable, unrewarding, useless, venenate,
      veneniferous, venenous, venomous, vicious, virulent, worthless

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