49 synonyms for subordinate such as apprentice, inferior, accessory, adjutant, and aide. Subordinate is an adjective, and its antonyms are central, major, and chief.
Inferior, junior, lesser, lower, lower-ranking, lowly, minor, second-fiddle, and supporting.
Accessory, additional, ancillary, attendant, auxiliary, extra, lesser, marginal, minor, of little account/importance, peripheral, second-class, second-fiddle, second-rate, secondary, subservient, subsidiary, and supplementary.
Adjutant, aide, apprentice, assistant, deputy, flunkey, henchman, inferior, junior, lackey, man/girl Friday, mate, minion, number two, right-hand man/woman, second, second fiddle, second in command, sidekick, subaltern, and underling.