1. to perform better than someone or something else; to exceed expectations or comparisons
The new employee outperformed all expectations in her first month.
A nova funcionária superou todas as expectativas em seu primeiro mês.
2. to do better than a competitor or benchmark, especially in business or finance
This investment fund has outperformed the market index for three consecutive years.
Este fundo de investimento superou o índice de mercado por três anos consecutivos.