The Collaborative International Dictionary of English v.0.48:

Bespatter \Be*spat"ter\, v. t. [imp. & p. p. Bespattered; p.
   pr. & vb. n. Bespattering.]
   1. To soil by spattering; to sprinkle, esp. with dirty water,
      mud, or anything which will leave foul spots or stains.
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   2. To asperse with calumny or reproach.
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            Whom never faction could bespatter.   --Swift.
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