quick–wit·ted 
/ˈkwɪkˈwɪtəd/ adjective
/ˈkwɪkˈwɪtəd/ adjective [more quick–witted; most quick–witted] : having or showing the ability to think and understand things quickly
▪ a quick-witted opponent/defendant ▪ quick-witted humor ▪ a quick-witted reply — opposite slow-witted
▪ a quick-witted opponent/defendant ▪ quick-witted humor ▪ a quick-witted reply — opposite slow-witted
