1. to show or exhibit a sense of assurance, self-belief, or certainty in one's abilities or in a situation
The athlete displayed confidence during the championship match.
O atleta demonstrou confiança durante a partida do campeonato.
2. to present oneself or behave in a manner that conveys trust and certainty
She displayed confidence in her presentation despite being nervous.
Ela demonstrou confiança na sua apresentação apesar de estar nervosa.