
once in a blue moon
This page is about the idiom once in a blue moon
Meaning
If something happens once in a blue moon, it happens very rarely.
For example
- We hardly ever go out these days, though once in a blue moon we might go and see a movie.
- My daughter lives in Brazil and she only comes to see us once in a blue moon; maybe every two or three years if we're lucky.
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Contributor: Matt Errey