accessory

noun

1 camera accessories such as tripods and flashguns:

attachment, extra, addition, add-on, retrofit, adjunct, appendage, appurtenance, (additional) component, fitment, supplement.

2 Paula wore each suit with perfectly matching accessories:

adornment, embellishment, finery, trimming, ornament, ornamentation, decoration, complement, fashion detail, frill;

trappings;

handbag, shoes, gloves, hat, belt, jewellery.

3 she was charged as an accessory to murder:

accomplice, partner in crime, abetter, associate, confederate, collaborator, fellow conspirator, henchman, conniver.

adjective

functionally the maxillae are a pair of accessory jaws:

additional, extra, supplementary, supplemental, auxiliary, ancillary, secondary, subsidiary, supportive, assisting, reserve, complementary, further, more, add-on.

accessory Oxford Dictionary of English