89 entries under significant topic. ×

2
ugly(adjective, bad, tough, severe, heavy)
1
all-important(adjective, important, serious, essential)
1
basic(adjective, important, essential, critical)
1
big(substantial, valuable, vital, imperative)
1
big-league(vital, imperative)
1
bottom-line(adjective, important, essential, critical)
1
cardinal(adjective, important, essential, critical)
1
central(adjective, important, critical, vital)
1
considerable(big, substantial, valuable, vital)
1
conspicuous(vital, imperative)
1
de rigueur(expression, adjective, essential, basic)
1
determining(big, important, substantial, serious)
1
esteemed(vital, imperative)
1
expedient(adjective, essential, basic, vital)
1
extensive(big, substantial, valuable, vital)
1
far-reaching(severe, big, substantial, valuable)
1
front-page(big, substantial, valuable, vital)
1
fundamental(adjective, important, essential, critical)
1
great(adjective, firm, intense, big, passionate)
1
grievous(adjective, hard, tough, severe, difficult)
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APASmart Define. (2015). urgent thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/urgent/thesaurus/synonyms
ChicagoSmart Define. 2015. "urgent thesaurus" https://smartdefine.org/urgent/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, urgent thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/urgent/thesaurus/synonyms>.
MLASmart Define. "urgent thesaurus" 3 August 2015. Web. 28 September 2026. <https://smartdefine.org/urgent/thesaurus/synonyms>