88 entries under significant topic. ×
| exceptional(adjective, big, substantial, valuable) | |
| exigent(big, substantial, valuable, vital) | |
| extensive(big, substantial, large, valuable) | |
| fab(adjective, big, important, substantial) | |
| far-reaching(big, substantial, valuable, vital) | |
| foremost(vital, imperative) | |
| front-page(adjective, big, substantial, valuable) | |
| grave(adjective, big, substantial, valuable) | |
| heavy(adjective, big, outstanding, substantial) | |
| imperative(big, substantial, valuable, vital) | |
| importunate(big, substantial, valuable, vital) | |
| influential(adjective, big, important, substantial) | |
| large(big, substantial, valuable, vital) | |
| marked(big, substantial, large, valuable) | |
| mattering much(expression, adjective, big, substantial) | |
| memorable(adjective, noteworthy) | |
| momentous(adjective, big, important, substantial) | |
| mondo(adjective, big, important, substantial) | |
| necessary(big, substantial, valuable, vital) | |
| of moment(expression, adjective, big, substantial) |
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| APA | Smart Define. (2015). something thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/something/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "something thesaurus" https://smartdefine.org/something/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, something thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/something/thesaurus/synonyms>. |
| MLA | Smart Define. "something thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/something/thesaurus/synonyms> |