nauseated nau·sea·ted UK/ˈnɔːziˌeɪtɪd/ US/ˈnɔziˌeɪtʌd/ rare adjective 1. feeling nausea; feeling about to vomit Synonymsqueasysicksickish Similarill WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.