optimist

Describes someone who is always optimistic, regardless of the circumstances.

Similar to 'eternal optimist', often used humorously to describe someone whose optimism cannot be changed.

Describes someone who is foolishly or unrealistically optimistic.

вечный оптимист

A fixed phrase used to describe someone's characteristically optimistic reaction or statement.

Устойчивое выражение, используемое для описания характерно оптимистичной реакции или заявления кого-либо.