1. A spontaneous, unplanned discussion between two or more people, conducted without prior preparation or script
The extemporaneous conversation between the two old friends was filled with laughter and nostalgia.
A conversa improvisada entre os dois velhos amigos estava cheia de risadas e nostalgia.
2. A dialogue or exchange of ideas that occurs naturally and without formal structure
During the panel discussion, several extemporaneous conversations broke out among audience members.
Durante o painel de discussão, várias conversas improvisadas surgiram entre os membros da plateia.