| materially(adverb, substantially) | |
| noticeably(adverb, very, severely, much, clearly) | |
| prominently | |
| rather(adverb, quantity, pretty, very, enough) | |
| really(adverb, substantially) | |
| relevantly(adverb, meaningfully) | |
| seriously(adverb, urgently, importantly) | |
| appreciably | |
| crucially(adverb, seriously, essentially, urgently, importantly) | |
| eloquently | |
| expressively(adverb, meaningfully) | |
| great deal(noun, adverb, quantity, enough, measurement) | |
| interestingly(adverb, interest, attitude, attention) | |
| liberally | |
| momentously | |
| monumentally | |
| purposefully(adverb, meaningfully) | |
| significant | |
| very(adverb, pretty, absolutely, severely, far) | |
| very much(expression, idiom, adverb, much, clearly) |
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| APA | Smart Define. (2016). significantly thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/significantly/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "significantly thesaurus" https://smartdefine.org/significantly/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, significantly thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/significantly/thesaurus/synonyms>. |
| MLA | Smart Define. "significantly thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/significantly/thesaurus/synonyms> |