Gerund Word Explorer
Idiom

Once in a blue moon

Once in a blue moon

Very rarely.

My cousin from Kochi visits us once in a blue moon.

Remember: Today 'blue moon' also names a rare extra full moon, every two or three years. Everyday English in India, the UK and the US.

Short lessonEveryday idiomsIdioms are phrases whose meaning is different from the meaning of their words.

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