a. [ Icel. kweisa pain; cf. Norw. kveis sickness after a debauch. ] 1. Sick at the stomach; affected with nausea; inclined to vomit; qualmish. [ 1913 Webster ]
(adj) causing or fraught with or showing anxiety, Syn. queasy, nervous, unquiet, uneasy, Example:spent an anxious night waiting for the test results; cast anxious glances behind her; those nervous moments before takeoff; an unquiet mind