From accessory + -ize. First attested in 1939 in American English.
accessorize (third-person singular simple present accessorizes, present participle accessorizing, simple past and past participle accessorized)
- (transitive or intransitive) To furnish with accessories.
- (intransitive) To wear, or to choose accessories.
- ^ Elliott K. Dobbie, C. William Dunmore, Robert K. Barnhart, et al. (editors), Chambers Dictionary of Etymology (Chambers Harrap Publishers Ltd, 2004 , ISBN 0550142304), page 6