918 entries under adjective topic. ×
| decisive(great, severe, firm, extraordinary) | |
| dedicated(complete, warm, total, passionate) | |
| detrimental(importance, main, dangerous, extremely significant) | |
| devoted(complete, warm, total, passionate) | |
| donnish(importance, valuable, main, notable) | |
| exciting(importance, valuable, main, notable) | |
| far reaching(importance, valuable, main, notable) | |
| genuine(set, open, honest, total) | |
| haughty(importance, valuable, main, notable) | |
| high(important, prominent, exalted) | |
| high-up(importance, valuable, main, notable) | |
| key-note(importance, valuable, main, notable) | |
| perilous(bad, heavy, uncertain, significant) | |
| precious(importance, main, greatness, extremely significant) | |
| red hot(importance, main, extremely significant) | |
| relevant(importance, big, significant, substantial) | |
| significative(importance, valuable, main, notable) | |
| ardent(complete, keen, warm, total) | |
| big league(importance, important, main, extremely significant) | |
| businesslike(work, heavy, somber, efficient) |
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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> |