106 entries under essential topic. ×
| urgent(adjective, clear, tough, severe, big) | |
| heavy(adjective, great, tough, severe, big) | |
| main(adjective, good, superior, unusual, important) | |
| basic(adjective, important, original, critical) | |
| integral(adjective, importance, important, original, serious) | |
| prime(adjective, good, important, original) | |
| first(adjective, superior, unusual, important, rank) | |
| deep(adjective, good, strong, tough, severe) | |
| imperative(adjective, big, important, determined, substantial) | |
| indispensable(adjective, important, original, serious) | |
| mean(verb, adjective, important, basic) | |
| name(strong, important, powerful, critical) | |
| paramount(adjective, good, important, original, serious) | |
| radical(adjective, great, important, original, serious) | |
| all-important(adjective, important, serious, critical) | |
| axiological(adjective, important, original, basic) | |
| basal(adjective, important, original, basic) | |
| bottom(adjective, important, original, basic) | |
| bottom-line(adjective, important, original, critical) | |
| coal-and-ice(important, critical, fundamental, imperative) |
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| APA | Smart Define. (2016). significant thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/significant/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, significant thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/significant/thesaurus/synonyms>. |
| MLA | Smart Define. "significant thesaurus" 4 March 2016. Web. 24 September 2026. <https://smartdefine.org/significant/thesaurus/synonyms> |