1. slow, below-average, or unremarkable progress or advancement in a particular area
The company's mediocre development of new products disappointed investors.
O desenvolvimento medíocre de novos produtos da empresa decepcionou os investidores.
2. inadequate or uninspiring growth in personal, professional, or intellectual capacity
His mediocre development as an athlete prevented him from reaching professional status.
Seu desenvolvimento medíocre como atleta impediu-o de alcançar status profissional.