- Definitions|2
- Thesaurus|1.9k
- Abbreviations|0
| planetary | |
| problem(tough, severe, painful, problematic, trying) | |
| problematic(tough, severe, painful, trying) | |
| prohibitive(tough, severe, painful, problematic, trying) | |
| rigid(tough, severe, painful, problematic, trying) | |
| rugged(adjective, strong, tough, rough, difficult) | |
| sound | |
| staggering | |
| strained | |
| super | |
| super-duper | |
| taxing | |
| thumping | |
| thundering | |
| toilful(adjective, tough, rough, difficult, heavy) | |
| trying(tough, severe, painful, problematic) | |
| unyielding(tough, severe, painful, problematic, trying) | |
| upstream(tough, severe, painful, problematic, trying) | |
| wearing(adjective, hard, tough, rough, difficult) | |
| well-built(strong, solid, vigorous, sturdy, robust) |
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| APA | Smart Define. (2013). herculean thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/herculean/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "herculean thesaurus" https://smartdefine.org/herculean/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2013, herculean thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/herculean/thesaurus/synonyms>. |
| MLA | Smart Define. "herculean thesaurus" 28 June 2013. Web. 30 September 2026. <https://smartdefine.org/herculean/thesaurus/synonyms> |