Ab·er·rate v. i.  To go astray; to diverge. [R.]
    Their own defective and aberrating vision.   --De Quincey.

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 aberrate
      v 1: diverge from the expected; "The President aberrated from
           being a perfect gentleman"
      2: diverge or deviate from the straight path; produce
         aberration; "The surfaces of the concave lens may be
         proportioned so as to aberrate exactly equal to the convex
         lens"