| shred | |
| sick(adjective, enthusiastic, ill, fervent, zealous) | |
| sizzling(adjective, enthusiastic, ill, sick, fervent) | |
| smoking(adjective, enthusiastic, ill, sick, fervent) | |
| so | |
| splinter | |
| steamed up(expression, adjective, enthusiastic, ill, sick) | |
| subversive | |
| summit(superiority, perfection) | |
| sumptuous(adjective, informal, extravagant, splendid, lavish) | |
| supreme(big, extreme, large, absolute, superiority) | |
| surpass | |
| syndicalist | |
| tag | |
| transcend | |
| ultra-ultra | |
| uncommonly(adverb, absolutely, very, severely, really) | |
| unusually(adverb, absolutely, very, severely, really) | |
| uttermost | |
| violent(adjective, enthusiastic, ill, sick, fervent) |
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| APA | Smart Define. (2015). ultra thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/ultra/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "ultra thesaurus" https://smartdefine.org/ultra/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, ultra thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ultra/thesaurus/synonyms>. |
| MLA | Smart Define. "ultra thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/ultra/thesaurus/synonyms> |