connubiate

verb1

1. •
   (slang, rare) To live together as man and wife; to marry; (loosely), to have relations.

   • Let it be Rome, Milan, Naples, Florence, Turin, Venice, or Switzerland, and ‘egad!’ (as Bayes saith,) I will connubiate and join you; and we will write a new ‘Inferno’ in our Paradise. — 1814