Accessory
Accessory noun - Something that is not necessary in itself but adds to the convenience or performance of the main piece of equipment.
Usage example: bought a new car with lots of high-tech accessories
Requirement is an antonym for accessory.
Requirement
Requirement noun - Something necessary, indispensable, or unavoidable.
Accessory is an antonym for requirement.
How words are described
Cite this Source
Requirement and Accessory. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/accessory/requirement
Accessory & Requirement. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/accessory/requirement>.
Requirement or Accessory. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/accessory/requirement.
Google Ngram Viewer shows how "accessory" and "requirement" have occurred on timeline