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English definition of “nauseous”

nauseous

adjective uk   /ˈnɔː.zi.əs/ /-ʒəs/ us    /ˈnɑː.ʃəs/
feeling as if you might vomit: Roller coasters make me feel nauseous.Vomiting and feelings of sickness formal making you feel as if you might vomit: the nauseous smell of rotting fleshhumorous The bride's mother was wearing a nauseous (= extremely unattractive) combination of green and yellow.Vomiting and feelings of sickness
(Definition of nauseous from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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