(n.) The good humor or mirth indulged in upon festive occasions; a convivial spirit or humor; festivity.

Greek abettor accessory accompany accomplice accord accouple accumulate ace acquaintance act in concert act together affiliate affiliate with affiliated affiliation agglutinate agree alliance allied ally alter ego amalgamate amass amigo analogon analogue appearance apply articulate assemble assistant assistant professor associate associate professor associate with associated association assort with attend axis band band together be acquainted with be friends be in cahoots be in league be inseparable bedfellow bedmate belonger bind blend bloc bond bosom buddy bracket bridge bridge over brother brother-in-arms brotherhood buddy bunch bunch up bunkie bunkmate butty cabal cahoots camarade card-carrier card-carrying member cardholder cement cement a union centralize chain chamberfellow charter member chum chum together chum with circuit clap together classmate clique clique with close copy close match club club together clubber clubman clubwoman coact coaction coadunate coalesce coalition cognate cohort coincide collaborate collaboration collaborator colleague collect collude comate combination combine come into come together committeeman companion company compatriot compeer complement comprise comrade concatenate concert concomitant concord concur confederate conference confidant confidante confrere congenator congener conglobulate congress conjoin conjugate conjunction connect connect with connection connive connotation consociate consolidate consort consort with conspire conventioneer conventioner conventionist conviviality cooperate cooperation coordinate copartner copulate correlate correlative correspond correspondent cotton to counterpart couple couple with cover creep in crony do business with draw a parallel dues-paying member embrace emeritus encompass enlist enlistee enroll enrollee enter equate equivalent faction familiar fantasy federalize federate federation fellow fellow student fellowship flock together fraternity fraternity man fraternize fraternize with friend fuse gaiety gang gang up gather get heads together get into get together girl friend glue go along with go in partners go in partnership go into go partners go with gossip guild guildsman hang around with hang out with hang together happen together harmonize herd together hint hit it off hobnob with hold together honorary member hook up hook up with hookup identify illusion image implication include initiate insider instructor interest interrelate intimate join join forces join fortunes with join in join in fellowship join together join up join up with join with joiner joviality keep company with keep together