Source : Webster's Revised Unabridged Dictionary (1913)

Nauseate \Nau"se*ate\, v. i. [imp. & p. p. {Nauseated}; p. pr. &
   vb. n. {Nauseating}.] [L. nauseare, nauseatum, fr. nausea.
   See {Nausea}.]
   To become squeamish; to feel nausea; to turn away with
   disgust.

Source : WordNet®

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