- Definitions|2
- Thesaurus|817
- Abbreviations|0
41 entries under severe topic. ×
| galling(adjective, tough, offensive, painful) | |
| gargantuan(tough, painful, problematic, trying) | |
| hard-won(tough, painful, problematic, trying) | |
| heavy(adjective, tough, difficult, awkward) | |
| herculean(adjective, tough, difficult, awkward) | |
| immense(tough, painful, problematic, trying) | |
| intricate(adjective, tough, difficult, awkward) | |
| irritating(tough, painful, problematic, trying) | |
| labored(adjective, great, tough, difficult) | |
| no picnic(expression, tough, painful, problematic) | |
| not easy(expression, tough, painful, problematic) | |
| operose(adjective, tough, difficult, awkward) | |
| problem(tough, painful, problematic, trying) | |
| problematic(tough, painful, tricky, trying) | |
| prohibitive(tough, painful, problematic, trying) | |
| rigid(tough, painful, thorough, demanding) | |
| troublesome(adjective, hard, tough, difficult) | |
| uphill(adjective, great, tough, difficult) | |
| upstream(tough, painful, problematic, trying) | |
| wearisome(adjective, tough, difficult, awkward) |
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Challenging on
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| APA | Smart Define. (2016). challenging thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/challenging/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "challenging thesaurus" https://smartdefine.org/challenging/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, challenging thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/challenging/thesaurus/synonyms>. |
| MLA | Smart Define. "challenging thesaurus" 2 March 2016. Web. 22 September 2026. <https://smartdefine.org/challenging/thesaurus/synonyms> |