What does the idiom 'once in a blue moon' mean?

Answer and explanation

Correct answer: A. rarely

  1. Step 1: The idiom 'once in a blue moon' means: rarely. Answer: rarely. Why not the others: every month, at night and very soon don't fit.

Practise more Vocabulary: Synonyms, Antonyms and Idioms.

Free questions with an explanation for every one, and full timed CSS Pakistan mock tests.