Choose the suitable adjective for each definition.

Choose the correct option.

This person expects the worst things to happen. [Optimistic|Pessimistic|Impatient]
This person doesn't get nervous when waiting for something. [Shy|Generous|Patient]
This person only thinks of their own advantage. [Insincere|Selfish|Irritable]
It's hard to trust this person. [Flexible|Easy-going|Unreliable]