143 entries under essential topic. ×

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bottom line(noun, expression, important, significant)
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charge(noun, right, want, obligation)
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coal and ice(expression, idiom, important, critical)
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commitment(noun, right, want, obligation)
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committal(noun, right, want, obligation)
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deficiency(noun, want, requirement, necessity)
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devoir(noun, right, want, obligation)
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exception(condition, requirement, qualification, prerequisite)
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exemption(condition, requirement, qualification, prerequisite)
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extremity(noun, right, want, requirement)
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inadequacy(noun, want, requirement, necessity)
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incumbent on(expression, adjective, significant, basic)
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insufficiency(noun, want, requirement, necessity)
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modification(condition, requirement, qualification, prerequisite)
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momentous(adjective, significant, basic, vital)
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name of game(expression, adjective, idiom, significant)
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name of the game(expression, condition, important, critical)
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ought(noun, right, want, obligation)
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reservation(condition, requirement, qualification, prerequisite)
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shortage(noun, want, requirement, necessity)
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APASmart Define. (2015). requisite thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/requisite/thesaurus/synonyms
ChicagoSmart Define. 2015. "requisite thesaurus" https://smartdefine.org/requisite/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, requisite thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/requisite/thesaurus/synonyms>.
MLASmart Define. "requisite thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/requisite/thesaurus/synonyms>