Conjoined

Adjective

1. Joined together, as with conjoined twins, or in matrimony.1600 If either of you know any inward impediment, why you should not be conjoined, I charge you, on your souls, to utter it. — Shakespeare, Much Ado About Nothing, ....representatives of a loosely conjoined nation... - Time

Usage notes

Conjoint is often used, but conjoined is the preferred usage.

Verb

1. conjoined

   (past of conjoin)