Synonyms|5Antonyms|0|Broader|0Narrower|0Related|0
1
one-off(adjective, unique)
0
limited-edition(adjective, unique)
0
once-in-a-lifetime(adjective, unique)
0
special(adjective, unique)
0
unrepeatable(adjective, unique)
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APASmart Define. (1970). never-to-be-repeated thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/never-to-be-repeated/thesaurus/synonyms
ChicagoSmart Define. 1970. "never-to-be-repeated thesaurus" https://smartdefine.org/never-to-be-repeated/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 1970, never-to-be-repeated thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/never-to-be-repeated/thesaurus/synonyms>.
MLASmart Define. "never-to-be-repeated thesaurus" 1 January 1970. Web. 20 September 2026. <https://smartdefine.org/never-to-be-repeated/thesaurus/synonyms>