The Oxford Thesaurus An A-Z Dictionary of Synonyms - accessory n.

1) extra, addition, adjunct, attachment, component, frill, Slang bells and whistles, doodah, US and Canadian doodad: My food processor has more accessories than I could ever need. 2) accessary, accomplice, helper, assistant, confederate, colleague, abettor, aide, collaborator, co-conspirator, conspirator, fellow-criminal, associate or partner in crime: Although he did not rob the bank, he drove the getaway car, which legally makes him an accessory before the fact. A seller of stolen goods is an accessory after the fact. --adj. 3) extra, subordinate, auxiliary, additional, ancillary, supplemental, supplementary, secondary, adventitious, Formal adscititious: For no apparent reason, the salamander grew an accessory limb near its hind leg.