1. A problem or challenge that is not immediately apparent or visible but becomes evident upon closer examination or during execution
The project seemed straightforward until we discovered hidden difficulties in the implementation.
O projeto parecia simples até descobrirmos dificuldades ocultas na implementação.
2. An obstacle or complication that is concealed or not disclosed at first glance
Buying a used car can involve hidden difficulties that only become clear after purchase.
Comprar um carro usado pode envolver dificuldades ocultas que só se tornam claras após a compra.