- [noun] someone who acts as assistant
- [adjective] functioning in a subsidiary or supporting capacity; "the main library and its auxiliary branches"
Synonyms: subsidiary, supplemental, supplementary
- [adjective] relating to something that is added but is not essential; "an ancillary pump"; "an adjuvant discipline to forms of mysticism"; "The mind and emotions are auxilliary to each other"
Synonyms: accessory, adjunct, ancillary, adjuvant, appurtenant, subsidiary