Log in or sign up to add your own related words. synonyms (76) Words with the same meaning ad lib ad libitum ad-lib ad-libbing arrangement at short notice at sight by ear cadenza caught napping caught off balance caught short extemporaneous extemporaneously extemporaneous...
Define impromptus. impromptus synonyms, impromptus pronunciation, impromptus translation, English dictionary definition of impromptus. adj. 1. Prompted by the occasion rather than being planned in advance: an impromptu party. 2. Spoken, performed, done,