1. Indicates that something is in a worse condition, more severe, or less desirable than something else
This situation is bad, but it is worse than before.
Esta situação é má, mas é pior do que antes.
2. Used to express that a circumstance has deteriorated or become more negative
He was sick yesterday, but today it is worse.
Ele estava doente ontem, mas hoje é pior.
3. Comparative statement indicating inferior quality or greater difficulty
The second option is worse than the first.
A segunda opção é pior que a primeira.