40 entries under adjective topic. ×

3
required(feature, characteristic, necessity)
3
serious(feature, characteristic, importance)
3
significant(feature, characteristic, importance)
3
urgent(feature, characteristic, necessity)
3
weighty(feature, characteristic, importance)
2
elemental(feature, characteristic, basis)
2
consequential(feature, characteristic, importance)
2
crucial(feature, characteristic, importance, necessity)
2
fundamental(feature, characteristic, basis, necessity)
2
indispensable(feature, characteristic, necessity)
2
inevitable(feature, characteristic, necessity)
2
main(feature, characteristic, basis)
2
momentous(feature, characteristic, importance)
2
notable(feature, characteristic, importance)
2
noteworthy(feature, characteristic, importance)
2
obligatory(feature, characteristic, necessity)
2
prerequisite(feature, characteristic, necessity)
2
primary(feature, characteristic, basis)
2
prime(feature, characteristic, basis)
2
requisite(feature, characteristic, necessity)
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APASmart Define. (1970). basic necessity thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/basic_necessity/thesaurus/related
ChicagoSmart Define. 1970. "basic necessity thesaurus" https://smartdefine.org/basic_necessity/thesaurus/related (accessed September 22, 2026).
HarvardSmart Define 1970, basic necessity thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/basic_necessity/thesaurus/related>.
MLASmart Define. "basic necessity thesaurus" 1 January 1970. Web. 22 September 2026. <https://smartdefine.org/basic_necessity/thesaurus/related>