1. to be of only moderate quality; to be neither good nor bad; to be ordinary or average
His performance was disappointing; he chose to be mediocre instead of striving for excellence.
Seu desempenho foi decepcionante; ele escolheu ser medíocre em vez de se esforçar pela excelência.
2. to lack distinction, talent, or exceptional qualities
The restaurant's food was nothing special; it continued to be mediocre year after year.
A comida do restaurante não tinha nada de especial; continuou a ser medíocre ano após ano.