Question

"As you can see, a blue moon is a very rare event" In this line the word ' rare ' means​

Answer 1

Answer:

if you want an antonym it will be often and if you want a synonym it will be infrequent

Explanation

Answer 2

Answer: To do something “once in a blue moon” is to do it very rarely: “That company puts on a good performance only once in a blue moon.” The phrase refers to the appearance of a second full moon within a calendar month, which actually happens about every thirty-two months.

Explanation: Example Sentences

1.The earthquakes hits once in a blue moon in this part of the earth, we never felt it.

2. I don't know why she bought that music system - she uses it once in a blue moon.

3."I think my grandson doesn't love me anymore, he comes to see me only once in a blue moon."