The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

WordNet (r) 3.0 (2006):

nauseated
    adj 1: feeling nausea; feeling about to vomit [syn: nauseated,
           nauseous, queasy, sick, sickish]

Moby Thesaurus II by Grady Ward, 1.0:

37 Moby Thesaurus words for "nauseated":
   airsick, anguished, anxious, barfy, bored, carsick, cheerless,
   choking, depressed, disgusted, gagging, grim, heaving, joyless,
   nauseous, offended, pleasureless, prey to malaise, pukish, puky,
   qualmish, qualmy, queasy, repelled, revolted, sad, seasick,
   sickened, squeamish, suffering angst, uneasy, unfulfilled,
   ungratified, unhappy, unquiet, unsatisfied, vomiting