96 entries under significant topic. ×
| extensive(adjective, great, big, important) | |
| far-reaching(severe, big, substantial, valuable) | |
| heavy number(expression, important, historic) | |
| historic(great, extraordinary, important, outstanding) | |
| imperative(big, important, substantial, valuable) | |
| important serious(expression, important, historic) | |
| importunate(big, substantial, valuable, vital) | |
| influential(outstanding, vital, eminent, imperative) | |
| key(important, large, essential, critical) | |
| major(adjective, great, tough, severe, important) | |
| marked(big, unusual, substantial, serious) | |
| memorable(adjective, informal, unusual, important, famous) | |
| mind-blowing(adjective, great, unusual, important, exceptional) | |
| necessary(big, important, substantial, valuable) | |
| of moment(expression, big, important, substantial) | |
| paramount(order, quality, tough, superior, important) | |
| primary(order, big, important, substantial) | |
| relevant(adjective, great, big, substantial) | |
| salient(big, important, substantial, valuable) | |
| signal(great, extraordinary, outstanding, splendid) |
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| APA | Smart Define. (2016). heavy thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/heavy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "heavy thesaurus" https://smartdefine.org/heavy/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, heavy thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/heavy/thesaurus/synonyms>. |
| MLA | Smart Define. "heavy thesaurus" 25 January 2016. Web. 25 September 2026. <https://smartdefine.org/heavy/thesaurus/synonyms> |