1. A speech delivered without prior preparation or written notes, spoken spontaneously in the moment
The CEO gave an improvised speech after the award ceremony was delayed.
O CEO fez um discurso improvisado após a cerimônia de premiação ser atrasada.
2. An extemporaneous address delivered with minimal or no planning
Her improvised speech at the wedding touched everyone's hearts.
O seu discurso improvisado no casamento tocou o coração de todos.