#1 nauseous s. [nauseating, noisome, queasy, loathsome, offensive, sickening, vile] causing or able to cause nausea; "a nauseating smell"; "nauseous offal"; "a sickening stench". wn
#2 nauseous s. [nauseated, queasy, sick, sickish] feeling nausea; feeling about to vomit. wn
vizzz