- accessory, adjunct, ancillary, adjuvant, appurtenant, auxiliary, subsidiary - relating to something that is added but is not essential; "an ancillary pump"; "an adjuvant discipline to forms of mysticism"; "The mind and emotions are auxilliary to each other"
Antonym: unsupportive (indirect, via supportive)
- accessory, accoutrement, accouterment - clothing that is worn or carried, but not part of your main clothing
--1 is a kind of clothing, article of clothing, vesture, wear
--1 has particulars: belt; furnishings, trappings - accessory, appurtenance, supplement, add-on - a supplementary component that improves capability
--2 is a kind of component, constituent, element
--2 has particulars:auto accessory; computer accessory; fitting; fixings, trimmings - accessory, accessary - someone who helps another person commit a crime
--3 is a kind of criminal, felon, crook, outlaw, malefactor
--3 has particulars:abettor, abetter; accessory after the fact; accessory before the fact; accessory during the fact; confederate, collaborator, henchman, partner in crime