The Collaborative International Dictionary of English v.0.48:

Obfuscate \Ob*fus"cate\, v. t. [imp. & p. p. Obfuscated; p.
   pr. & vb. n. Obfuscating.]
   1. To darken; to obscure; to becloud.
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   2. Hence: To confuse; to bewilder; to make unclear.
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            His head, like a smokejack, the funnel unswept, and
            the ideas whirling round and round about in it, all
            obfuscated and darkened over with fuliginous matter.
                                                  --Sterne.
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            Clouds of passion which might obfuscate the
            intellects of meaner females.         --Sir. W.
                                                  Scott.
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