Thesaurus

add–on

noun

Synonyms and Antonyms of ADD-ON

something that is not necessary in itself but adds to the convenience or performance of the main piece of equipment <a blow-dryer that comes with a couple of add-ons for people who are serious about styling their hair>
Synonyms accoutrement (or accouterment), adapter (also adaptor), add-on, adjunct, appendage, appliance, attachment, option

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