systemiser sys·te·mi·ser uncommon noun 1. an organizer who puts things in order “Aristotle was a great orderer of ideas” Synonymsorderersystematizersystematisersystemizersystematist Related words Word family systemisesystemizesystematisesystematizeorder Broader terms organizer WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.