<p><strong>Adjective</strong></p><ul><li>additional</li><li>supplementary</li><li>reserve: an auxiliary police force</li><li>used as a substitute or reserve in case of need: The hospital has an auxiliary power system in case of a blackout.</li><li>Synonyms: secondary, ancillary, backup</li><li>(of a boat) having an engine that can be used to supplement the sails: an auxiliary yawl.</li><li>giving support; serving as an aid; helpful: The mind and emotions are auxiliary to each other. Passion is auxiliary to art.</li></ul><p><strong>Noun</strong></p><ul><li>plural: auxiliaries</li><li>a person or thing that gives aid of any kind; helper.</li><li>Synonyms: help, assistant, ally, aide</li><li>an organization allied with, but subsidiary to, a main body of restricted membership, especially one composed of members' relatives: The men's club and the ladies' auxiliary were merged into one organization.</li></ul><p><strong>Verb</strong></p><ul><li>auxiliaries, foreign troops in the service of a nation at war.</li><li>Navy: a naval vessel designed for other than combat purposes, as a tug, supply ship, or transport.</li><li>Nautical: a sailing vessel carrying an auxiliary propulsion engine or engines.</li></ul><p><strong>End of Response</strong></p>