Impromptus are often described as spontaneous or unrehearsed. Synonyms for impromptus include improvisation, extemporization, spur-of-the-moment, ad-lib, and off-the-cuff. These terms all share the sense of being unplanned and performed on the fly. Improvisation and extemporization suggest an ability to create something on the spot, while spur-of-the-moment and ad-lib imply a hasty or unprepared performance. Off-the-cuff typically describes a speech or comment made without prior preparation. All of these synonyms convey a certain sense of energy and spontaneity, which makes impromptus exciting and unpredictable performances that can captivate audiences. Whether in music, acting, or public speaking, impromptus are often seen as a test of creativity and adaptability.