Subservient or subordinate, like a handmaid; auxiliary. The Convocation of York seems to have been always considered as inferior, and even ancillary, to the greater province. (Hallam)
Origin: L. Ancillaris, fr. Ancilla a female servant.
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.