578 entries under adjective topic. ×
| respectable(substantial, large, admired, respected) | |
| salient(extraordinary, unusual, important, substantial) | |
| solemn(importance, valuable, main, notable) | |
| sound(large, forceful, accepted, established) | |
| tidy(substantial, large, considerable) | |
| urgent(clear, tough, severe, big) | |
| valid(good, clear, sensible, fair) | |
| bigwig(importance, valuable, main, notable) | |
| ample(substantial, large, considerable) | |
| authoritative | |
| big time(importance, main, extremely significant) | |
| celebrated(outstanding, prominent, notable, distinguished) | |
| constitutive(importance, valuable, main, notable) | |
| denotative(characteristic, representative, telling, ominous) | |
| earnest(importance, valuable, main, notable) | |
| effective(strong, sharp, important, powerful) | |
| effectual(sharp, useful, beneficial, advantageous) | |
| eminent(good, extraordinary, important, strange) | |
| exciting(importance, valuable, main, notable) | |
| good(comfort, rich, well, convenient) |
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| APA | Smart Define. (2016). significant thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/significant/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, significant thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/significant/thesaurus/synonyms>. |
| MLA | Smart Define. "significant thesaurus" 4 March 2016. Web. 24 September 2026. <https://smartdefine.org/significant/thesaurus/synonyms> |