- Definitions|2
- Thesaurus|1.9k
- Abbreviations|0
148 entries under difficult topic. ×
| strong(adjective, tough, energetic, powerful) | |
| formidable(adjective, tough, severe, rough) | |
| uphill(adjective, hard, great, tough, severe) | |
| wearisome(adjective, dull, tough, severe) | |
| heavy(adjective, dull, tough, severe, rough) | |
| intense(adjective, strong, tough, harsh) | |
| rugged(adjective, action, strong, tough, severe) | |
| severe(adjective, tough, rough, harsh) | |
| tireless(adjective, strong, energetic, lively) | |
| trying(adjective, dull, tough, severe, rough) | |
| wearying(adjective, dull, awkward, boring) | |
| effortful(adjective, hard, great, tough, rough) | |
| fatiguing(adjective, dull, awkward, boring) | |
| operose(adjective, hard, tough, severe, rough) | |
| powerful(adjective, strong, great, tough) | |
| ardent(adjective, energetic, active, vigorous) | |
| backbreaking(adjective, strong, hard, rough) | |
| grueling(adjective, hard, tough, severe) | |
| oppressive(adjective, dull, harsh, cruel) | |
| rough(adjective, action, hard, great, tough) |
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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> |