59 entries under required topic. ×

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basic(adjective, significant, essential, vital, fundamental)
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bottom-line(adjective, significant, essential, basic, vital)
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cardinal(adjective, significant, essential, basic, vital)
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coercive(adjective, affected, strained, unwilling, unnatural)
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compulsatory(adjective, necessary, forced, obligatory)
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counted upon(expression, adjective, obligatory)
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crucial(adjective, significant, essential, basic, vital)
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elementary(adjective, significant, essential, basic, vital)
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enforced(affected, strained, unnatural, obligatory)
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forced(affected, strained, unnatural, obligatory)
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fundamental(adjective, significant, essential, basic, vital)
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momentous(adjective, significant, essential, basic, vital)
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necessitous(essential, needed)
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paramount(adjective, significant, essential, basic, vital)
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prime(adjective, significant, essential, basic, vital)
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principal(adjective, significant, essential, basic, vital)
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significant(adjective, essential, basic, vital, effective)
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urgent(adjective, significant, essential, basic, vital)
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vital(adjective, significant, essential, basic)
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APASmart Define. (2015). binding thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/binding/thesaurus/synonyms
ChicagoSmart Define. 2015. "binding thesaurus" https://smartdefine.org/binding/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, binding thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/binding/thesaurus/synonyms>.
MLASmart Define. "binding thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/binding/thesaurus/synonyms>