The phrase “once in a blue moon” has 5 syllables: once in a blue moon
It's pronounced as /wʌns ɪn ə bluː muːn/
What is synonym and antonym for once in a blue moon?
In the thesaurus, “once in a blue moon” has 84 synonyms and 32 antonyms.
Here are synonyms and antonyms for once in a blue moon along with examples of usage in sentences.
On this page you'll find 116 synonyms, antonyms, or another words to once in a blue moon, such as: a few times, almost inconceivably, almost not, always, at intervals, at random, at times.
Make sure to choose synonyms and antonyms that are appropriate for the context of the sentence.