The Collaborative International Dictionary of English v.0.48:

Deathful \Death"ful\, a.
   1. Full of death or slaughter; murderous; destructive;
      bloody.
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            These eyes behold
            The deathful scene.                   --Pope.
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   2. Liable to undergo death; mortal.
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            The deathless gods and deathful earth. --Chapman.
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