dismarry

from The Collaborative International Dictionary of English v.0.48

Dismarry \Dis*mar"ry\, v. t. [Pref. dis- + marry: cf. OF.
   desmarier, F. d['e]marier.]
   To free from the bonds of marriage; to divorce. [Obs.] --Ld.
   Berners.
   [1913 Webster]