1. A structured discussion between two or more parties on a specific topic, conducted according to established rules and procedures, often with a moderator and judging criteria
The presidential candidates participated in a formal debate on economic policy.
Os candidatos presidenciais participaram de um debate formal sobre política econômica.
2. An academic or competitive event where argumentation follows strict rules of evidence, reasoning, and presentation
She won first place in the formal debate competition at the national championships.
Ela ganhou o primeiro lugar na competição de debate formal nos campeonatos nacionais.