219 entries under adjective topic. ×

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classic
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equable(persistent, continuous, endless, relentless)
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fiendish
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hellish
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ineradicable
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inextirpable
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irreparable
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irrepealable
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irrepressible
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irretrievable
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irreversible
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like the Rock of Gibralter(expression, idiom, persistent, continuous)
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marathon
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monochrome(persistent, continuous, endless, relentless)
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monophonic(persistent, continuous, endless, relentless)
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myriad
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non-breakable
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non-perishable
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not undoable
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of a piece(expression, idiom, persistent, continuous)
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APASmart Define. (2016). everlasting thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/everlasting/thesaurus/synonyms
ChicagoSmart Define. 2016. "everlasting thesaurus" https://smartdefine.org/everlasting/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, everlasting thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/everlasting/thesaurus/synonyms>.
MLASmart Define. "everlasting thesaurus" 26 February 2016. Web. 25 September 2026. <https://smartdefine.org/everlasting/thesaurus/synonyms>