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.
2. Hence: To confuse; to bewilder; to make unclear.
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.
Clouds of passion which might obfuscate the
intellects of meaner females. --Sir. W.