The Collaborative International Dictionary of English v.0.48:

Misrepresent \Mis*rep`re*sent"\, v. t.
   To represent incorrectly (almost always, unfavorably); to
   give a false or erroneous representation of, either
   maliciously, ignorantly, or carelessly. --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Misrepresent \Mis*rep`re*sent"\, v. i.
   To make an incorrect or untrue representation. --Milton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

misrepresent
    v 1: represent falsely; "This statement misrepresents my
         intentions" [syn: misrepresent, belie]
    2: tamper, with the purpose of deception; "Fudge the figures";
       "cook the books"; "falsify the data" [syn: fudge,
       manipulate, fake, falsify, cook, wangle,
       misrepresent]