suficiente

suficiente

Enough; adequate.

Here, 'suficiente' is used as an adjective meaning 'enough', applied to specify the quantity of money needed for a purchase.

Eu não tenho dinheiro suficiente para comprar este carro.

I don't have enough money to buy this car.

In this case, 'suficiente' again acts as an adjective to qualify the amount of time necessary for exam preparation.

Estudando este material, você terá tempo suficiente para se preparar para o exame.

By studying this material, you will have enough time to prepare for the exam.

Here, 'suficientemente' is an adverb derived from 'suficiente', meaning 'sufficiently', and it describes the manner in which the state of being prepared is perceived.

Há pessoas que nunca se sentem suficientemente preparadas.

There are people who never feel sufficiently prepared.