90 entries under straightforward topic. ×
| outspoken(open, honest, true, straight) | |
| phlegmatic(adjective, tough, rational, sober) | |
| plain(adjective, calm, open, tough, honest) | |
| pragmatic(adjective, tough, rational, sober) | |
| pretensionless(open, honest, true, straight) | |
| prosaic(adjective, tough, rational, sober) | |
| prosy(adjective, tough, rational, sober) | |
| regular(open, honest, true, straight) | |
| righteous(open, honest, true, straight) | |
| saintly(open, honest, true, straight) | |
| square(open, honest, true, straight) | |
| stoic(adjective, tough, rational, sober) | |
| sure enough(expression, honest, true, earnest) | |
| true-blue(open, honest, true, straight) | |
| trustworthy(adjective, open, honest, pure, true) | |
| twenty-four carat(expression, honest, true, earnest) | |
| unaffected(adjective, open, tough, honest, true) | |
| undesigning(open, honest, true, straight) | |
| undissembled(open, honest, true, straight) | |
| unembellished(adjective, tough, rational, sober) |
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| APA | Smart Define. (2016). serious thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/serious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, serious thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/serious/thesaurus/synonyms>. |
| MLA | Smart Define. "serious thesaurus" 24 February 2016. Web. 26 September 2026. <https://smartdefine.org/serious/thesaurus/synonyms> |