126 entries under sober topic. ×
| pragmatic(adjective, tough, rational, straightforward) | |
| prosaic(adjective, tough, rational, straightforward) | |
| prosy(adjective, tough, rational, straightforward) | |
| rapt(adjective, reasonable, keen, deep, rational) | |
| reasoning(adjective, reasonable, keen, deep, rational) | |
| retrospective(adjective, reasonable, keen, deep, rational) | |
| settled(adjective, strong, firm, sensible, steady) | |
| soft(adjective, calm, quiet, gentle, sensible) | |
| stable(adjective, strong, solid, big, important) | |
| stoic(adjective, tough, rational, straightforward) | |
| studious(adjective, reasonable, keen, deep, thoughtful) | |
| subjective(adjective, reasonable, keen, deep, rational) | |
| unaffected(adjective, open, tough, honest, true) | |
| unembellished(adjective, tough, rational, straightforward) | |
| unidealistic(adjective, tough, rational, straightforward) | |
| unimaginative(adjective, tough, rational, straightforward) | |
| unimpassioned(adjective, calm, tough, dark, restrained) | |
| unsentimental(adjective, tough, rational, straightforward) | |
| unvarnished(adjective, tough, rational, straightforward) | |
| wise(adjective, reasonable, keen, heavy, deep) |
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| APA | Smart Define. (2016). serious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/serious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, serious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/serious/thesaurus/synonyms>. |
| MLA | Smart Define. "serious thesaurus" 24 February 2016. Web. 27 September 2026. <https://smartdefine.org/serious/thesaurus/synonyms> |