96 entries under significant topic. ×
| exigent(adjective, difficult, harsh, big, cruel) | |
| fateful(severe, important, weighty, historic) | |
| main(quality, tough, superior, prime) | |
| major-league(adjective, great, solid, informal, extraordinary) | |
| material(adjective, strong, hard, big, important) | |
| notable(adjective, great, solid, extraordinary, unusual) | |
| outstanding(adjective, solid, unusual, important, powerful) | |
| principal(noun, adjective, order, advance, start) | |
| stable(adjective, strong, hard, sound, tough) | |
| steady(adjective, strong, sound, tough, solid) | |
| urgent(adjective, tough, severe, informal, big) | |
| vital(adjective, informal, big, important) | |
| big-league(great, extraordinary, serious, prominent) | |
| chips are down(expression, idiom, important, historic) | |
| conspicuous(adjective, great, unusual, important, famous) | |
| decisive(great, important, substantial, essential) | |
| epochal(important, historic) | |
| essential(adjective, big, important, substantial) | |
| esteemed(famous, outstanding, vital, distinguished) | |
| eventful(great, unusual, important, serious) |
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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> |