Conjoin
Conjoin , transitive verb
[French conjoindre, from Latin conjungere, -junctum; con- + jungere to join. See Join, and compare Conjugate, Conjunction.]
To join together; to unite.
The English army, that divided was
Into two parties, is now conjoined in one.
If either of you know any inward impediment why you should not be conjoined.
Let that which he learns next be nearly conjoined with what he knows already.
Conjoin , intransitive verb
To unite; to join; to league. — Shakespeare