56 entries under noun topic. ×
| fastness | |
| firmness | |
| fortitude | |
| friction | |
| hardihood | |
| hardiness | |
| hardness | |
| hesitancy | |
| hesitation | |
| hindrance | |
| hostility | |
| ignorance | |
| immunity | |
| impedance | |
| impediment | |
| inability | |
| inflexibility | |
| insubordination | |
| interference | |
| obstacle |
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| APA | Smart Define. (2015). smoothness thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/smoothness/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "smoothness thesaurus" https://smartdefine.org/smoothness/thesaurus/antonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, smoothness thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/smoothness/thesaurus/antonyms>. |
| MLA | Smart Define. "smoothness thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/smoothness/thesaurus/antonyms> |