78 entries under adjective topic. ×

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large(important, useful)
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momentous
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peerless
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pivotal
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primeval
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primordial
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proper
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relevant
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rudimentary
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seminal
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serious
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substantial
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urgent
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useful
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valuable(important, useful)
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vital
0
weighty
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worthwhile(important, useful)
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APASmart Define. (2015). secondary thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/secondary/thesaurus/antonyms
ChicagoSmart Define. 2015. "secondary thesaurus" https://smartdefine.org/secondary/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2015, secondary thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/secondary/thesaurus/antonyms>.
MLASmart Define. "secondary thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/secondary/thesaurus/antonyms>