150 entries under substantial topic. ×
| decisive(great, important, significant, essential) | |
| energetic(adjective, strong, sound, tough, solid) | |
| essential(adjective, big, important, significant) | |
| extensive(adjective, great, big, important, significant) | |
| far-reaching(severe, big, significant, valuable) | |
| fixed(adjective, set, strong, hard, sound) | |
| front-page(great, big, outstanding, valuable) | |
| hale(adjective, strong, sound, tough, solid) | |
| hard as nails(expression, adjective, idiom, strong, hard) | |
| imperative(big, important, significant, valuable) | |
| importunate(big, significant, valuable, vital) | |
| in fine feather(expression, adjective, idiom, strong, sound) | |
| lavish(great, rich, abundant, extensive) | |
| life and death(expression, idiom, big, important) | |
| marked(big, unusual, significant, serious) | |
| massed(adjective, close, strong, hard) | |
| necessary(big, important, significant, valuable) | |
| no-nonsense(dull, quiet, big, sober) | |
| of moment(expression, big, important, significant) | |
| of note(expression, outstanding, valuable, eminent) |
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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> |