35 entries under difficulty topic. ×
| onerous(adjective, characteristic, trouble, quality) | |
| oppressive(adjective, characteristic, trouble, quality) | |
| painful(adjective, characteristic, trouble, quality) | |
| problematic(adjective, characteristic, trouble, quality) | |
| problematical(adjective, characteristic, trouble, quality) | |
| recondite(adjective, characteristic, trouble, quality) | |
| rough(adjective, characteristic, trouble, quality) | |
| severe(adjective, characteristic, trouble, quality) | |
| stiff(adjective, characteristic, trouble, quality) | |
| strenuous(adjective, characteristic, trouble, quality) | |
| taxing(adjective, characteristic, trouble, quality) | |
| toilful(adjective, characteristic, trouble, quality) | |
| toilsome(adjective, characteristic, trouble, quality) | |
| tough(adjective, characteristic, trouble, quality) | |
| troublesome(adjective, characteristic, trouble, quality) |
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| APA | Smart Define. (2015). royal thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/royal/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "royal thesaurus" https://smartdefine.org/royal/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, royal thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/royal/thesaurus/antonyms>. |
| MLA | Smart Define. "royal thesaurus" 8 November 2015. Web. 25 September 2026. <https://smartdefine.org/royal/thesaurus/antonyms> |