215 entries under adjective topic. ×

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heavy-duty
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history-making
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inerasable
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irredeemable
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irrepealable
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long-wearing
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magnificent
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marvellous
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memorable
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neverending(persistent, continuous, vast, endless)
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non-breakable
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non-cancellable
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non-erasable
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non-perishable
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non-reversible
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not undoable
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notable
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noteworthy
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set in concrete(constant, lasting)
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shatter-proof
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APASmart Define. (2016). permanent thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/permanent/thesaurus/synonyms
ChicagoSmart Define. 2016. "permanent thesaurus" https://smartdefine.org/permanent/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, permanent thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/permanent/thesaurus/synonyms>.
MLASmart Define. "permanent thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/permanent/thesaurus/synonyms>