Definitions for nauseousˈnɔ ʃəs, -zi əs
Random House Webster's College Dictionary
nau•seous*ˈnɔ ʃəs, -zi əs(adj.)
affected with nausea; nauseated.
causing nausea; sickening; nauseating.
* Usage: The two literal senses of nauseous , “affected with nausea” (to feel nauseous) and “causing nausea” (a nauseous smell), appear in English at almost the same time in the early 17th century, and both are in standard use at present. nauseous in the sense “affected with nausea” is often criticized, though it is more common than nauseated , the recommended form, in this sense. In the sense “causing nausea,” either literally or figuratively, nauseating has become more common than nauseous : a nauseating smell; nauseating eating habits.
Origin of nauseous:
1595–1605; < L nauseōsus. See nausea , -ous
nauseating, nauseous, noisome, queasy, loathsome, offensive, sickening, vile(adj)
causing or able to cause nausea
"a nauseating smell"; "nauseous offal"; "a sickening stench"
nauseated, nauseous, queasy, sick, sickish(adj)
feeling nausea; feeling about to vomit
Kernerman English Learner's Dictionary
nauseous(adjective)ˈnɔ ʃəs, -zi əs
suffering from nausea
I've been feeling nauseous all day.
Causing nausea; sickening or disgusting.
Afflicted with nausea; sick.
Origin: From Latin nauseosus, corresponding to nausea + -ous.
causing, or fitted to cause, nausea; sickening; loathsome; disgusting; exciting abhorrence; as, a nauseous drug or medicine