| resounding | |
| restrictive | |
| rigorous | |
| ringing | |
| roaring | |
| scraggy | |
| scratchy | |
| sharp(adjective, strong, bright) | |
| shrill(adjective, harsh) | |
| stonelike | |
| strenuous | |
| throaty | |
| thunderous | |
| tough | |
| uncompromising | |
| unrelenting | |
| vigorous(dull, weak, feeble) | |
| well(adjective, strong, sharp, bright) | |
| murderous | |
| abrupt |
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| APA | Smart Define. (2016). soft thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/soft/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "soft thesaurus" https://smartdefine.org/soft/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, soft thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/soft/thesaurus/antonyms>. |
| MLA | Smart Define. "soft thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/soft/thesaurus/antonyms> |