Useful English Word or Phrase to Boost Your English: Once in a blue moon

What does it mean?

An idiom meaning something happens very rarely or infrequently.

Is it positive or negative?

Neutral.

When do you use it?

Use it when something happens only occasionally.

Examples

Example 1: I only go there once in a blue moon.

Example 2: We see him once in a blue moon these days.

Question for you

What do you do only once in a blue moon?

Are you looking for English speaking practice online?

Once in a blue moon is a lovely idiom for rare events. We can practise it in online English lessons with a British native speaker. Another time phrase is down the road. Find out more here.