nauseous in WordNet English dictionary

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