Synonyms|861Antonyms|138|Broader|14Narrower|0Related|399

77 entries under significant topic. ×

6
needed(adjective, set, important, essential)
5
decisive(adjective, big, important, substantial)
4
basic(noun, adjective, important, essential)
3
momentous(adjective, big, important, determined)
2
central(adjective, important, critical, vital)
2
considerable(big, substantial, valuable, vital)
2
de rigueur(expression, adjective, essential, basic)
2
great
2
influential(vital, key, commanding, imposing)
2
paramount(adjective, big, important, substantial)
2
principal(adjective, big, important, substantial)
2
substantial(big, valuable, vital)
2
weighty(big, substantial, valuable, vital)
1
all-important(adjective, important, serious, essential)
1
big(substantial, valuable, vital)
1
big-league
1
bottom-line(adjective, important, essential, critical)
1
cardinal(adjective, important, capital, essential)
1
chief(adjective, big, important, substantial)
1
conspicuous
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ChicagoSmart Define. 2015. "imperative thesaurus" https://smartdefine.org/imperative/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, imperative thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/imperative/thesaurus/synonyms>.
MLASmart Define. "imperative thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/imperative/thesaurus/synonyms>