<p><strong>Adjective</strong></p><ul><li>subordinate</li><li>secondary</li><li>subsidiary: Your medical coverage includes physiotherapy, eye testing, and other ancillary services.</li><li>auxiliary: assisting: The bookkeeper serves in an ancillary role, supporting the treasurer.</li></ul><p><strong>Noun</strong></p><ul><li>plural: ancillaries</li><li>something that serves in an ancillary capacity: Downloadable ancillaries to the basic textbook, such as videos and worksheets, are on our website.</li></ul><p><strong>End of Response</strong></p>