Synonyms|718Antonyms|124|Broader|10Narrower|0Related|388

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5
fleeting(adjective, irregular, permanent, temporary)
0
ephemeral(adjective, irregular, passing, lasting)
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APASmart Define. (2016). perpetual thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/perpetual/thesaurus/antonyms
ChicagoSmart Define. 2016. "perpetual thesaurus" https://smartdefine.org/perpetual/thesaurus/antonyms (accessed September 30, 2026).
HarvardSmart Define 2016, perpetual thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/perpetual/thesaurus/antonyms>.
MLASmart Define. "perpetual thesaurus" 30 March 2016. Web. 30 September 2026. <https://smartdefine.org/perpetual/thesaurus/antonyms>