Synonyms|6Antonyms|0|Broader|0Narrower|0Related|1
2
twenty-first
0
blackjack
0
ordinal
0
twenty-one
0
vingt-et-un
0
xxi
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APASmart Define. (2013). 21st thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/21st/thesaurus/synonyms
ChicagoSmart Define. 2013. "21st thesaurus" https://smartdefine.org/21st/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, 21st thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/21st/thesaurus/synonyms>.
MLASmart Define. "21st thesaurus" 17 June 2013. Web. 20 September 2026. <https://smartdefine.org/21st/thesaurus/synonyms>