ancillary
Ancillary (adjective) means providing support to something more important, without being an essential part of it. Example: “The hospital is recruiting nurses as well as ancillary staff.”
How to use ancillary
Learner’s notesIn plain EnglishHelping out with the main job, but not the main job itself.
Formal; common in medicine, law, education and business.
Do not confuse it with 'axillary', which means relating to the armpit.
Trace the full origin ↓Fill the gap
Can you complete this real example?
The hospital is recruiting nurses as well as _____ staff.
Etymology
From Latin ancillaris, from ancilla 'maidservant'.