1. A script or outline for a film, play, or presentation that is created spontaneously without prior planning or preparation
The director decided to use an improvised script for the final scene.
O diretor decidiu usar um roteiro improvisado para a cena final.
2. An unplanned or ad-hoc plan of action or itinerary created on the spot
They followed a improvised script for their road trip across the country.
Eles seguiram um roteiro improvisado para sua viagem de carro pelo país.