The Oxford Thesaurus An A-Z Dictionary of Synonyms - queasyadj.

1) uncomfortable, uneasy, nervous, apprehensive, ill at ease, troubled, worried, discomfited; doubtful, hesitant: I had a queasy feeling that I was being watched. The manager was a bit queasy about giving Denis so much responsibility. 2) sick, nauseous, nauseated, ill, bilious, queer, Colloq green around or about the gills, groggy, woozy: Catherine felt very queasy after the ride on the roller coaster.