The Collaborative International Dictionary of English v.0.48:

Victimize \Vic"tim*ize\, v. t. [imp. & p. p. Victimized; p.
   pr. & vb. n. Victimizing.]
   To make a victim of, esp. by deception; to dupe; to cheat.
   [1913 Webster]

WordNet (r) 3.0 (2006):

victimized
    adj 1: of persons; taken advantage of; "after going out of his
           way to help his friend get the job he felt not
           appreciated but used" [syn: exploited, ill-used,
           put-upon, used, victimized, victimised]