Source : Webster's Revised Unabridged Dictionary (1913)

Nauseous \Nau"seous\ (?; 277), a. [L. nauseosus.]
   Causing, or fitted to cause, nausea; sickening; loathsome;
   disgusting; exciting abhorrence; as, a nauseous drug or
   medicine. -- {Nau"seous*ly}, adv. -- {Nau"seous*ness}, n.

         The nauseousness of such company disgusts a reasonable
         man.                                     --Dryden.

Source : WordNet®

nauseous
     adj : causing or able to cause nausea; "a nauseating smell";
           "nauseous offal"; "a sickening stench" [syn: {nauseating},
            {noisome}, {loathsome}, {offensive}, {sickening}, {vile}]