Synonyms|18Antonyms|2|Broader|2Narrower|0Related|3
6
infrequently(adverb, usual, rarely)
6
seldom(adverb, usual, rarely, infrequently)
6
unusually
4
occasionally(adverb, usual, rarely)
4
scarcely
2
intermittently
2
sporadically(adverb, usual, infrequently)
1
now and then(adverb, once)
1
rarely(adverb, usual)
0
every now and then
0
little(adverb, usual)
0
on and off(adverb, intermittently)
0
once in a while(adverb, occasionally)
0
at irregular intervals
0
fancifully
0
hardly
0
negligibly
0
quirkily
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APASmart Define. (2011). once in a blue moon thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/once_in_a_blue_moon/thesaurus/synonyms
ChicagoSmart Define. 2011. "once in a blue moon thesaurus" https://smartdefine.org/once_in_a_blue_moon/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2011, once in a blue moon thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/once_in_a_blue_moon/thesaurus/synonyms>.
MLASmart Define. "once in a blue moon thesaurus" 24 May 2011. Web. 21 September 2026. <https://smartdefine.org/once_in_a_blue_moon/thesaurus/synonyms>