blue moon
Noun
Meaning
a long time
Source: WordNetSynonyms
Antonyms
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Examples
Once in a blue moon someone like you comes along.
Magic doesn't happen often - not once in a blue moon ... I expect there isn't another magic ship like this one in the whole world.
Another thing that I don't like to do is show too much how it goes. I do it once in a blue moon. Sometimes there are lessons when I don't pick up a violin at all.
Once in a blue moon a captain imposes his influence not just upon his opponents, but on a generation of cricketers, by the sheer force of his personality.
When I made Blue Moon Swamp, there was a lot of trial and error; I was trying to find people who would be simpatico with my style, and with what I had in mind for the album.
something that happens once in blue moon almost never happens