The Collaborative International Dictionary of English v.0.48:

Misconstrue \Mis*con"strue\, v. t. [imp. & p. p. Misconstrued;
   p. pr. & vb. n. Misconstruing.]
   To construe wrongly; to interpret erroneously.
   [1913 Webster]

         Do not, great sir, misconstrue his intent. --Dryden.
   [1913 Webster]

         Much afflicted to find his actions misconstrued.
                                                  --Addison.
   [1913 Webster]

WordNet (r) 3.0 (2006):

misconstrue
    v 1: interpret in the wrong way; "Don't misinterpret my comments
         as criticism"; "She misconstrued my remarks" [syn:
         misconstrue, misinterpret, misconceive,
         misunderstand, misapprehend, be amiss]