40 entries under critical topic. ×

3
life-or-death(adjective, important, essential, basic)
3
paramount(adjective, important, significant, original, serious)
2
bottom-line(adjective, important, significant, original, essential)
2
exigent(adjective, important, significant, serious, essential)
2
significant(adjective, important, original, serious, essential)
2
wanted(adjective, important, significant, serious, capital)
1
all-important(adjective, important, significant, serious, essential)
1
coal-and-ice(important, essential, basic, fundamental)
1
constitutive(important, capital, essential, basic)
1
decisive(adjective, important, significant, essential)
1
heavy(important, essential, fundamental, earnest)
1
meaningful(important, substantial, serious, essential)
1
meat-and-potatoes(important, significant, original, essential)
1
momentous(adjective, important, significant, substantial, serious)
1
name(important, essential, fundamental, imperative)
1
name-of-the-game(important, essential, basic, fundamental)
1
nitty-gritty(adjective, important, original, essential)
1
underlined(important, essential, basic, fundamental)
0
coal and ice(expression, idiom, important, essential)
0
name of the game(expression, idiom, important, essential)
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APASmart Define. (2015). indispensable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/indispensable/thesaurus/synonyms
ChicagoSmart Define. 2015. "indispensable thesaurus" https://smartdefine.org/indispensable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, indispensable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/indispensable/thesaurus/synonyms>.
MLASmart Define. "indispensable thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/indispensable/thesaurus/synonyms>