A person or persons who provide assistance with some task.
A verb that accompanies the main verb in a clause in order to make distinctions in tense, mood, voice or aspect.
That is being added as integratory part.
Functioning in a supporting capacity.
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"
someone who acts as assistant
functioning in a subsidiary or supporting capacity; "the main library and its auxiliary branches"