84 entries under rational topic. ×
| prosaic(adjective, tough, straightforward, sober) | |
| prosy(adjective, tough, straightforward, sober) | |
| rapt(adjective, reasonable, keen, deep) | |
| reasoning(adjective, reasonable, keen, deep) | |
| retrospective(adjective, reasonable, keen, deep) | |
| stoic(adjective, tough, straightforward, sober) | |
| subjective(adjective, reasonable, keen, deep) | |
| unaffected(adjective, open, tough, honest, true) | |
| unembellished(adjective, tough, straightforward, sober) | |
| unexcited(adjective, calm, sensible, dark, restrained) | |
| unidealistic(adjective, tough, straightforward, sober) | |
| unimaginative(adjective, tough, straightforward, sober) | |
| unimpassioned(adjective, calm, tough, dark, restrained) | |
| unsentimental(adjective, tough, straightforward, sober) | |
| unvarnished(adjective, tough, straightforward, sober) | |
| abnegating(adjective, calm, sensible, dark, restrained) | |
| constrained(adjective, calm, sensible, dark, restrained) | |
| eschewing(adjective, calm, sensible, dark, restrained) | |
| forgoing(adjective, calm, sensible, dark, restrained) | |
| literal(straightforward, down-to-earth) |
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| APA | Smart Define. (2016). serious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/serious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, serious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/serious/thesaurus/synonyms>. |
| MLA | Smart Define. "serious thesaurus" 24 February 2016. Web. 25 September 2026. <https://smartdefine.org/serious/thesaurus/synonyms> |