1. (n.) One who aids another; an assistant; a coworker.

2. (n.) The assistant of a bishop or of a priest holding a benefice.

Grand Penitentiary Holy Father abuna acolyte adjunct adjutant agent aid aide aide-de-camp aider ally antipope archbishop archdeacon archpriest assistant associate attendant auxiliary bedfellow best man bishop bishop coadjutor brother brother-in-arms canon cardinal cardinal bishop cardinal deacon cardinal priest chaplain coadjutant coadjutress coadjutrix cohort colleague companion compatriot compeer comrade confederate confrere consociate consort crony curate dean deputy diocesan ecclesiarch exarch executive officer fellow fellow member help helper helpmate helpmeet hierarch high priest lieutenant metropolitan papa paranymph paraprofessional patriarch penitentiary pontiff pope prebendary prelate primate rector rural dean second servant sideman subdean suffragan supporting actor supporting instrumentalist vicar