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Once in a blue moon Meaning in English

expression

WUHNS in uh BLOO MOON
WONS in uh BLOO MOON

Definition

This phrase means something happens very rarely, almost never.

Usage & Nuances

This is an informal idiom, used mostly in conversation or casual writing. It doesn't refer to the actual moon but means something is very unusual or rare. Do not use it in very formal contexts. Similar expressions: 'hardly ever', 'once in a lifetime' (even rarer).

Example Sentences

We eat out once in a blue moon.

basic

She visits her hometown once in a blue moon.

basic

My brother calls me once in a blue moon.

basic

I only go to the movies once in a blue moon these days.

natural

Getting snow here is something that happens once in a blue moon.

natural

Once in a blue moon, my parents surprise us with breakfast in bed.

natural