918 entries under adjective topic. ×
| bad(severe, nasty, offensive, unhappy) | |
| challenging(hard, tough, difficult, importance) | |
| composed(calm, cool, sensible, dark) | |
| determined(set, strong, firm, total) | |
| dignified(calm, cool, severe, important) | |
| dour(close, hard, severe, harsh) | |
| good(honest, pure, important, significant) | |
| historic(importance, important, main, extremely significant) | |
| honest(set, open, true, natural) | |
| intent(firm, determined, thoughtful, sober) | |
| ruminative(reasonable, rational, thoughtful, sober) | |
| somber(calm, dull, cool, severe) | |
| newsworthy(importance, important, valuable, main) | |
| pensive(set, keen, unhappy, gloomy) | |
| austere(set, strong, hard, tough) | |
| awful(bad, severe, offensive, intense) | |
| big shot(importance, valuable, main, notable) | |
| bigwig(importance, valuable, main, notable) | |
| committed(complete, warm, total, passionate) | |
| constitutive(importance, valuable, main, notable) |
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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> |