90 entries under important topic. ×
| number one(adjective, lead, head, master) | |
| original(adjective, head, significant, beginning) | |
| predominant(adjective, outstanding, significant, original) | |
| primitive(adjective, head, significant, beginning) | |
| real | |
| requisite(significant, original, essential, critical) | |
| telling | |
| axiological(significant, original, basic, vital) | |
| axiomatic(significant, original, basic, vital) | |
| bottom(significant, original, basic, vital) | |
| bottom-line(significant, original, essential, critical) | |
| coal-and-ice(essential, critical, basic, fundamental) | |
| constitutional(adjective, significant, original, essential) | |
| foundational(significant, original, basic, vital) | |
| grass-roots(significant, original, basic, vital) | |
| heavy(significant, large, essential, critical) | |
| imperative(significant, essential, critical, basic) | |
| life-or-death(essential, critical, basic, fundamental) | |
| major-league(significant, large, considerable) | |
| meat-and-potatoes(significant, original, essential, critical) |
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| APA | Smart Define. (2016). key thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/key/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "key thesaurus" https://smartdefine.org/key/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, key thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/key/thesaurus/synonyms>. |
| MLA | Smart Define. "key thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/key/thesaurus/synonyms> |