extemporized

Definitions

Composed, performed, or uttered without prior preparation or rehearsal.

Devised or improvised on the spur of the moment to meet a specific need.

Examples

The speaker extemporized a brilliant closing statement when he realized he had forgotten his prepared notes.

Lacking a script, the jazz musician extemporized a soulful melody that captivated the entire audience.

Synonyms

improvised ad-libbed unrehearsed spontaneous off-the-cuff impromptu unprepared

Antonyms

rehearsed prepared planned scripted premeditated studied practiced