167 entries under important topic. ×
| life and death(expression, idiom, great, serious) | |
| lofty(adjective, free, fine, significant) | |
| major-league(great, significant, large, serious) | |
| meaningful(great, big, substantial, large) | |
| meat-and-potatoes(adjective, significant, original, essential) | |
| mostest(adjective, bad, great, excellent, superior) | |
| needed(adjective, significant, capital, essential) | |
| out-of-sight(adjective, bad, tough, top, perfect) | |
| out-of-this-world(adjective, bad, great, excellent, superior) | |
| popular(adjective, good, powerful, significant) | |
| prerequisite(adjective, significant, capital, essential) | |
| pressing(adjective, big, significant, substantial) | |
| primordial(adjective, significant, original, essential) | |
| quintessential(adjective, significant, essential, basic) | |
| regal(adjective, free, fine, significant) | |
| standout(adjective, bad, great, excellent, big) | |
| steller(adjective, bad, great, excellent, superior) | |
| structural(material, natural, original, basic) | |
| substratal(adjective, significant, original, essential) | |
| substrative(adjective, significant, original, essential) |
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| APA | Smart Define. (2016). principal thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/principal/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "principal thesaurus" https://smartdefine.org/principal/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, principal thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/principal/thesaurus/synonyms>. |
| MLA | Smart Define. "principal thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/principal/thesaurus/synonyms> |