ad-libbed

adjective
UK /ˌædˈlɪbd/
US /ˌædˈlɪbd/

Said or done without planning ahead.

The actor's ad-libbed joke made everyone laugh.


OTHER MEANINGS

2. Created on the spot rather than written beforehand.

Her ad-libbed speech was surprisingly smooth.

3. Added freely during a performance.

The comedian threw in an ad-libbed line about the weather.

4. Made up quickly to fill a gap or solve a problem.

He gave an ad-libbed excuse for being late.