118 entries under significant topic. ×
| imperative(big, substantial, valuable, essential) | |
| importunate(big, substantial, valuable, vital) | |
| marked(adjective, great, superior, big, unusual) | |
| mattering much(expression, big, substantial, valuable) | |
| meaningful(big, important, substantial, serious) | |
| meat-and-potatoes(adjective, base, important, last) | |
| middle(adjective, important, essential, basic) | |
| noted(adjective, important, critical, prominent) | |
| nuclear(material, important, natural, basic) | |
| of moment(expression, big, substantial, valuable) | |
| of note(expression, big, substantial, valuable) | |
| of substance(expression, big, substantial, valuable) | |
| ponderous(big, substantial, valuable, vital) | |
| pressing(big, important, substantial, valuable) | |
| relevant(big, substantial, valuable, vital) | |
| signal(vital, imperative) | |
| something(big, substantial, valuable, vital) | |
| standout(big, substantial, valuable, vital) | |
| substrative(adjective, important, original, essential) | |
| superlative(adjective, fine, important, grand) |
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| APA | Smart Define. (2016). primary thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/primary/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "primary thesaurus" https://smartdefine.org/primary/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, primary thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/primary/thesaurus/synonyms>. |
| MLA | Smart Define. "primary thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/primary/thesaurus/synonyms> |