1. A narrative or plot that is created spontaneously without prior planning or script, often in film, theater, or performance
The actor's ad-lib storyline during the live performance delighted the audience.
A trama improvisada do ator durante a apresentação ao vivo deliciou o público.
2. An unscripted or improvised sequence of events in a story that deviates from the original plot
The director allowed an ad-lib storyline when the lead actress forgot her lines.
O diretor permitiu uma trama improvisada quando a atriz principal esqueceu suas falas.