Question

Choose the correct meaning of the underlined proverb / idiom: They meet each other once in a blue moon.
1) Frequently
2) In the night
3) Very seldom
4) In light of a blue moon

Answer 1

Once in a blue moon is an idiomatic expression and it means very seldom.

Option (3) is correct.

Explanation:

• The idiom "once in a blue moon" means very seldom or rarely.

• It also means rarely or very seldom.
• If we use the idiom "once in a blue moon" in a sentence then it means that the things occur very often or infrequently.

• He performs efficiently once in a blue moon.