What is another word for "adjunct"?

Roget's Thesaurus (1911) lists these synonyms for "adjunct": abettor, accessory, accompaniment, accompany, accomplice, addition, adherent, adjutant, adjuvant, advocate, after, ally, along, alter, and, angel, appendage, appurtenance, arm, assistant, associate, associated, association, attend, attendant, attribute, auxiliary, backer, bear, boat, body, bring, candle, champion, cheek, clerk, coadjutor, coadjutrix, coefficiency, coefficient.