Meaning: Very rarely.
His apartment is always filthy. He cleans it once in a blue moon.
I’m trying to save money, so I only go out to eat at a restaurant once in a blue moon.
A: “How often do you go back to your hometown?” B: “Once in a blue moon.”
Somebody says, “I cook once in a blue moon.” What do they mean?
A. They cook once a week.
B. They cook once a month.
C. They cook once a year.
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The correct answer is C. Once in a blue moon means very rarely, so C is the best answer.
2 thoughts on “Idiom of the Week: Once in a Blue Moon”
when the lottery have a big prize.I’ll buy it once a blue moon.
Even though I miss my country, but I go back once in a blue moon.