The Collaborative International Dictionary of English v.0.48:
Disenfranchise \Dis`en*fran"chise\, v. t. To disfranchise; to deprive of the rights of a citizen. -- Dis`en*fran"chise*ment, n. [1913 Webster]WordNet (r) 3.0 (2006):
disenfranchise v 1: deprive of voting rights [syn: disenfranchise, disfranchise] [ant: enfranchise]