deadly

from WordNet (r) 3.0 (2006)
deadly
    adv 1: as if dead [syn: {deadly}, {lifelessly}]
    2: (used as intensives) extremely; "she was madly in love";
       "deadly dull"; "deadly earnest"; "deucedly clever"; "insanely
       jealous" [syn: {madly}, {insanely}, {deadly}, {deucedly},
       {devilishly}]
    adj 1: causing or capable of causing death; "a fatal accident";
           "a deadly enemy"; "mortal combat"; "a mortal illness"
           [syn: {deadly}, {deathly}, {mortal}]
    2: of an instrument of certain death; "deadly poisons"; "lethal
       weapon"; "a lethal injection" [syn: {deadly}, {lethal}]
    3: extremely poisonous or injurious; producing venom; "venomous
       snakes"; "a virulent insect bite" [syn: {deadly}, {venomous},
       {virulent}]
    4: involving loss of divine grace or spiritual death; "the seven
       deadly sins" [syn: {deadly}, {mortal(a)}]
    5: exceedingly harmful [syn: {baneful}, {deadly}, {pernicious},
       {pestilent}]
    6: (of a disease) having a rapid course and violent effect
    
from The Collaborative International Dictionary of English v.0.48
deadly \dead"ly\, adv.
   1. In a manner resembling, or as if produced by, death;
      deathly. "Deadly pale." --Shak.
      [1913 Webster]

   2. In a manner to occasion death; mortally.
      [1913 Webster]

            The groanings of a deadly wounded man. --Ezek. xxx.
                                                  24.
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   3. In an implacable manner; destructively.
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   4. Extremely. [Obs.] "Deadly weary." --Orrery. "So deadly
      cunning a man." --Arbuthnot.
      [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
deadly \dead"ly\, a.
   1. Capable of causing death; mortal; fatal; destructive;
      certain or likely to cause death; as, a deadly blow or
      wound.
      [1913 Webster]

   2. Aiming or willing to destroy; implacable; desperately
      hostile; flagitious; as, deadly enemies.
      [1913 Webster]

            Thy assailant is quick, skillful, and deadly.
                                                  --Shak.
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   3. Subject to death; mortal. [Obs.]
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            The image of a deadly man.            --Wyclif (Rom.
                                                  i. 23).
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   {Deadly nightshade} (Bot.), a poisonous plant; belladonna.
      See under {Nightshade}.
      [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
213 Moby Thesaurus words for "deadly":
      a la mort, abominably, accurate, agonizingly, ashen, awful,
      awfully, baldly, baleful, balefully, baneful, barbaric, barbarous,
      bitterly, blatantly, bloodthirsty, blue, boring, brashly, brutal,
      cadaverous, calamitous, cataclysmal, cataclysmic, catastrophic,
      catching, cold-blooded, communicable, confoundedly, consuming,
      consumptive, contagious, corpselike, corroding, corrosive,
      corrupting, corruptive, counterproductive, cruelly, damaging,
      damnably, dangerous, dead, deadened, death-bringing, deathful,
      deathlike, deathly, deathly pale, deleterious, demolishing,
      demolitionary, depredatory, desolating, destroying, destructive,
      detrimental, deucedly, devastating, disadvantageous, disastrous,
      disserviceable, distressing, distressingly, dolorously, doomful,
      dreadful, dreadfully, dreary, dull, eerie, egregiously, envenomed,
      exact, excessively, excruciating, excruciatingly, exorbitantly,
      extravagantly, fatal, fateful, fearful, feral, ferocious,
      flagrantly, fratricidal, frightful, frightfully, ghastly,
      ghostlike, ghostly, grievously, grisly, gruesome, haggard, harmful,
      heartless, hellishly, homicidal, horrible, horribly, howling,
      humdrum, hurtful, implacable, improperly, inexcusably, infectious,
      infective, infernally, inhuman, injurious, inordinately,
      internecine, intolerably, killing, lamentably, lethal, livid,
      lurid, macabre, malefic, malevolent, malign, malignant, mephitic,
      merciless, miasmal, miasmatic, miasmic, mischievous, miserably,
      mortal, mortuary, murderous, nakedly, nihilist, nihilistic,
      noisome, noxious, ominous, openly, painfully, pale, pallid,
      pernicious, pestiferous, pestilent, pestilential, piteously,
      pitiless, poisonous, precise, prejudicial, ravaging, rousing,
      ruining, ruinous, ruthless, sadly, savage, scatheful,
      self-destructive, shatteringly, shockingly, slaying,
      something awful, something fierce, sorely, staggeringly,
      subversionary, subversive, suicidal, tedious, terrible, terribly,
      terrific, thumping, tiresome, to the death, torturously, toxic,
      toxicant, toxiferous, true, unashamedly, unbearably, uncanny,
      unconscionably, unduly, unearthly, unerring, unfailing,
      unpardonably, vandalic, vandalish, vandalistic, venenate,
      veneniferous, venenous, venomous, vicious, virulent, wan, wasteful,
      wasting, wearisome, wearying, weird, whacking, white, withering,
      woefully

    

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