One who aids another; an assistant; a coworker. [1913 Webster]
"Craftily outwitting her perjured coadjutor." [1913 Webster]
The assistant of a bishop or of a priest holding a benefice. [1913 Webster]

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OXFORD DICTIONARY

coadjutor, n. an assistant, esp. an assistant bishop.

Etymology

ME f. OF coadjuteur f. LL coadjutor (as CO-, adjutor f. adjuvare -jut- help)

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THESAURUS

coadjutor

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

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ROGET THESAURUS

coadjutor

Auxiliary

N auxiliary, recruit, assistant, adjuvant, adjutant, ayudante, coaid, adjunct, help, helper, help mate, helping hand, midwife, colleague, partner, mate, confrere, cooperator, coadjutor, coadjutrix, collaborator, ally, friend, confidant, fidus Achates, pal, buddy, alter ego, confederate, accomplice, complice, accessory, accessory after the fact, particeps criminis, socius criminis, aide-de-camp, secretary, clerk, associate, marshal, right-hand, right-hand man, Friday, girl Friday, man Friday, gopher, gofer, candle- holder, bottle-holder, handmaid, servant, puppet, cat's-paw, jackal, tool, dupe, stooge, ame damnee, satellite, adherent, votary, sectarian, secretary, seconder, backer, upholder, abettor, advocate, partisan, champion, patron, friend at court, mediator, angel (theater, entertainment), friend in need, Jack at a pinch, deus ex machina, guardian angel, tutelary genius.

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