918 entries under adjective topic. ×
| fateful(importance, valuable, main, notable) | |
| impressive(importance, valuable, main, notable) | |
| influential(good, great, importance, important) | |
| notable(great, extraordinary, importance, unusual) | |
| thoughtful(severe, deep, sober, thinking) | |
| desperate(severe, significant, extreme, vital) | |
| major(great, unpleasant, heavy, important) | |
| outstanding(great, importance, unusual, important) | |
| purposeful(firm, importance, resolute, valuable) | |
| responsible(importance, valuable, main, notable) | |
| steady(calm, set, cool, firm) | |
| stern(resolute, somber, humorless) | |
| terrible(bad, great, difficult, extraordinary) | |
| big-league(importance, valuable, main, notable) | |
| fervent(complete, keen, warm, total) | |
| intense(severe, keen, warm, sensible) | |
| no-nonsense(calm, dull, work, open) | |
| remarkable(importance, unusual, important, famous) | |
| resolute(severe, firm, sensible, harsh) | |
| unsmiling(somber, humorless) |
For more, visit
Serious on
Power Thesaurus
| 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> |