Adjectives

(s)nauseating, nauseous, noisome, queasy, loathsome, offensive, sickening, vilecausing or able to cause nausea“a nauseating smell”, “nauseous offal”, “a sickening stench”
(s)nauseated, nauseous, queasy, sick, sickishfeeling nausea; feeling about to vomit
(s)anxious, nervous, queasy, uneasy, unquietcausing or fraught with or showing anxiety“spent an anxious night waiting for the test results”, “cast anxious glances behind her”, “those nervous moments before takeoff”, “an unquiet mind”