- Definitions|1
- Thesaurus|1.8k
- Abbreviations|0
59 entries under serious topic. ×
| significant(adjective, good, clear, strong, show) | |
| important(adjective, good, strong, great, tough) | |
| weighty(adjective, good, clear, strong, great) | |
| grave(adjective, dull, quiet, great, tough) | |
| earnest(adjective, dull, quiet, severe, importance) | |
| notable(adjective, great, importance, unusual, important) | |
| outstanding(adjective, great, importance, unusual, important) | |
| solemn(adjective, dull, quiet, severe, importance) | |
| deep(adjective, tough, severe, sad, important) | |
| heavy(adjective, dull, quiet, tough, severe) | |
| sober(adjective, dull, quiet, severe, big) | |
| crucial(great, severe, important, significant, substantial) | |
| major(adjective, great, tough, severe, important) | |
| cardinal(important, substantial, essential, critical) | |
| close(adjective, severe, thoughtful, sober) | |
| critical(great, important, significant, substantial) | |
| major-league(adjective, strong, great, extraordinary, unusual) | |
| urgent(severe, important, substantial, valuable) | |
| firm(adjective, strong, severe, solid, important) | |
| constant(adjective, thoughtful, sober, sincere) |
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| APA | Smart Define. (2016). meaningful thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/meaningful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "meaningful thesaurus" https://smartdefine.org/meaningful/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, meaningful thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/meaningful/thesaurus/synonyms>. |
| MLA | Smart Define. "meaningful thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/meaningful/thesaurus/synonyms> |