Synonyms|59Antonyms|2|Broader|0Narrower|0Related|41
0
anguill
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boundless
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ceaseless
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constant
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continual
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continuous
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countless
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date
0
eternal
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everlasting
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immortal
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incessant
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infinite
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interminable
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limitless
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misdated
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no date(expression, idiom)
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not dated(expression, idiom)
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out of date(expression, idiom, anachronism)
0
past due(expression, idiom, anachronism)
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APASmart Define. (2013). undated thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/undated/thesaurus/synonyms
ChicagoSmart Define. 2013. "undated thesaurus" https://smartdefine.org/undated/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2013, undated thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/undated/thesaurus/synonyms>.
MLASmart Define. "undated thesaurus" 28 June 2013. Web. 24 September 2026. <https://smartdefine.org/undated/thesaurus/synonyms>