77 entries under strenuous topic. ×
| uphill(adjective, hard, great, tough, easy) | |
| hairy(noun, adjective, hard, severe, rough) | |
| baffling(adjective, hard, obscure, strange, uncertain) | |
| effortful(adjective, hard, great, tough, rough) | |
| challenging(adjective, hard, great, tough, obscure) | |
| labored(adjective, hard, great, tough, rough) | |
| irksome(adjective, dull, tough, difficulty, heavy) | |
| strong(adjective, relentless, stressful, pressured) | |
| mean(adjective, hard, tough, severe, rough) | |
| dramatic | |
| forceful(adjective, stressful) | |
| testing(adjective, tough, unhappy, awkward, grim) | |
| thrilling | |
| violent(adjective, hard, severe, rough, harsh) | |
| affecting | |
| animated | |
| ardent | |
| blazing | |
| eager | |
| eloquent |
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| APA | Smart Define. (2016). difficult thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/difficult/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "difficult thesaurus" https://smartdefine.org/difficult/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, difficult thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/difficult/thesaurus/synonyms>. |
| MLA | Smart Define. "difficult thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/difficult/thesaurus/synonyms> |