a. [ L. nauseosus. ] 1. Causing, or fitted to cause, nausea; sickening; loathsome; disgusting; exciting abhorrence; as, a nauseous drug or medicine. [ 1913 Webster ]
2. Feeling nausea; as, nauseous from the effects of chemotherapy. [ PJC ]
-- Nau"seous*ly, adv. -- Nau"seous*ness, n. [ 1913 Webster ]
The nauseousness of such company disgusts a reasonable man. Dryden. [ 1913 Webster ]