- Definitions|2
- Thesaurus|1.9k
- Abbreviations|0
153 entries under tough topic. ×
| wearisome(adjective, dull, severe, difficult) | |
| heavy(adjective, dull, severe, rough) | |
| intense(adjective, strong, difficult, harsh) | |
| lusty(adjective, strong, intense, energetic) | |
| rugged(adjective, action, strong, severe) | |
| severe(adjective, rough, difficult, harsh) | |
| trying(adjective, dull, severe, rough) | |
| effortful(adjective, hard, great, rough) | |
| lively(adjective, action, strong, energetic) | |
| operose(adjective, hard, severe, rough) | |
| peppy(adjective, action, strong, informal) | |
| powerful(adjective, strong, great, difficult) | |
| vital(adjective, strong, intense, energetic) | |
| brisk(adjective, action, strong, intense) | |
| grueling(adjective, hard, severe, difficult) | |
| rough(adjective, action, hard, great) | |
| troublesome(adjective, severe, difficult, awkward) | |
| zippy(adjective, strong, energetic, powerful) | |
| Herculean(adjective, strong, severe, difficult) | |
| enterprising(adjective, activity, strong, smart) |
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| APA | Smart Define. (2016). strenuous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/strenuous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "strenuous thesaurus" https://smartdefine.org/strenuous/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, strenuous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/strenuous/thesaurus/synonyms>. |
| MLA | Smart Define. "strenuous thesaurus" 1 April 2016. Web. 28 September 2026. <https://smartdefine.org/strenuous/thesaurus/synonyms> |