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Idioms & Expressions
Once in a blue moon
Describing something that happens infrequently
Literal Meaning
Once: One time; in: Inside or during; a: One; blue: Color between green and violet; moon: Earth's satellite.
Actual Meaning
Very rarely, almost never
Examples in Context

Friend: 'He calls once in a blue moon.' (Translation: He rarely calls)

Helpful Tips
  • 1Emphasizes rarity
  • 2Blue moons are uncommon but real
  • 3About infrequency
Phrase Thesaurus
Similar words and synonyms for this phrase
rarely
seldom
infrequently
hardly ever
occasionally
Related Phrases
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It is what it is
Business as usual