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Adjective: nauseous  no-shus or no-zee-us
  1. Causing or able to cause nausea
    "nauseous offal";
    - nauseating, noisome, queasy, loathsome, offensive, sickening, vile, vomitous [US], loathful [archaic]
  2. Feeling nausea; feeling about to vomit
    "Patient did not vomit during the day but felt highly nauseous";
    - nauseated, queasy, sick, sickish

See also: gut-wrenching, ill, sick, unwholesome

Encyclopedia: Nauseous