149 entries under important topic. ×
| good(adjective, honest, pure, significant) | |
| historic(adjective, importance, main, extremely significant) | |
| newsworthy(adjective, importance, valuable, main) | |
| decisive(adjective, great, severe, firm, extraordinary) | |
| high(adjective, prominent, exalted) | |
| big league(adjective, importance, main, extremely significant) | |
| formidable(adjective, bad, hard, difficult, unpleasant) | |
| menacing(adjective, bad, nasty, unpleasant, heavy) | |
| noble(adjective, importance, significant, grand) | |
| pivotal | |
| threatening(adjective, bad, severe, unpleasant, heavy) | |
| ugly(adjective, bad, nasty, offensive, unpleasant) | |
| distressing(adjective, tough, severe, rough, difficult) | |
| life-and-death(adjective, heavy, critical, vital) | |
| noteworthy(adjective, outstanding, prominent, remarkable) | |
| strenuous(adjective, hard, severe, rough, difficult) | |
| burning(adjective, keen, warm, intense, passionate) | |
| cool(adjective, calm, sensible, unusual, relaxed) | |
| distinguished(adjective, great, unusual, famous) | |
| fell(adjective, unpleasant, heavy, significant) |
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| APA | Smart Define. (2016). serious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/serious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, serious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/serious/thesaurus/synonyms>. |
| MLA | Smart Define. "serious thesaurus" 24 February 2016. Web. 24 September 2026. <https://smartdefine.org/serious/thesaurus/synonyms> |