- Definitions|2
- Thesaurus|1.9k
- Abbreviations|0
148 entries under difficult topic. ×
| relentless(energetic, vigorous, unrelenting, stressful) | |
| slavish(adjective, tough, rough, heavy) | |
| terrible(adjective, tough, rough, intense) | |
| toilful(adjective, tough, rough, heavy) | |
| unflagging(adjective, strong, energetic, lively) | |
| unsparing(adjective, tough, rough, harsh) | |
| violent | |
| adverse | |
| contrary | |
| deep(severe, intense, weighty, stressful) | |
| difficile(adjective, tough, severe, rough) | |
| distressing(adjective, tough, severe, rough) | |
| fierce(tough, intense, heavy, demanding) | |
| hellish(adjective, unpleasant, grim, savage) | |
| high-powered(adjective, strong, moving, lively) | |
| irksome(adjective, dull, awkward, boring) | |
| merciless(adjective, tough, severe, rough) | |
| murder(adjective, hard, great, tough, severe) | |
| no picnic(expression, tough, severe, rough) | |
| sapping(adjective, unpleasant, grim, savage) |
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| APA | Smart Define. (2016). strenuous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/strenuous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "strenuous thesaurus" https://smartdefine.org/strenuous/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, strenuous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/strenuous/thesaurus/synonyms>. |
| MLA | Smart Define. "strenuous thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/strenuous/thesaurus/synonyms> |