master of ceremonies mas·te·rof·ceremonies uncommon noun 1. a person who acts as host at formal occasions (makes an introductory speech and introduces other speakers) Synonymsmaster of ceremoniesemceehost Related words Word family hostemcee Broader terms entertainer Narrower terms compereLord of Misrulequestion masterringmastertoastmasterSullivan WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.