Crossword puzzle clue "occurring once in a blue moon"

Here are the possible solutions for occurring once in a blue moon clue

Answer
Clue
Relevancy
rare
Clue
Occurring once in a blue moon
Definition
not common
annual
Clue
Occurring once a year
Definition
happening every year
secular
Clue
Occurring once in a century
ina
Clue
Once __ blue moon
Once ___ blue moon
Once -- blue moon
Once ____ blue moon
Once ___ blue moon: 2 wds.

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