Contubernial

{ Con*tu"ber*nal (?), Con`tu*ber"ni*al (?) }, a. [L. contubernalis a tent companion, fr. contubernium tent companionship.] Living or messing together; familiar; in companionship.

Humble folk ben Christes friends: they ben contubernial with the Lord, thy King.
Chaucer.