54 entries under grueling topic. ×
| distressing(adjective, difficult, awkward, demanding) | |
| exhausting(adjective, difficult, awkward, demanding, strenuous) | |
| fatiguing(adjective, difficult, awkward, demanding) | |
| formidable(adjective, severe, difficult, violent, awkward) | |
| grinding(adjective, difficult, awkward, demanding) | |
| hairy(adjective, severe, difficult, violent, awkward) | |
| herculean(adjective, tough, difficult, awkward, grim) | |
| intricate(adjective, difficult, awkward, demanding, strenuous) | |
| involved(adjective, difficult, awkward, demanding) | |
| irksome(adjective, difficult, awkward, demanding, strenuous) | |
| knotty(adjective, severe, difficult, violent, awkward) | |
| labored(adjective, tough, difficult, awkward, grim) | |
| mean(adjective, severe, difficult, violent, awkward) | |
| merciless(adjective, difficult, awkward, demanding) | |
| murder(adjective, severe, difficult, violent, awkward) | |
| operose(adjective, tough, severe, difficult, violent) | |
| problematical(adjective, difficult, awkward, demanding) | |
| rigorous(adjective, severe, difficult, violent, awkward) | |
| rugged(adjective, severe, difficult, violent, awkward) | |
| scabrous(adjective, difficult, awkward, demanding) |
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| APA | Smart Define. (2015). testing thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/testing/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "testing thesaurus" https://smartdefine.org/testing/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, testing thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/testing/thesaurus/synonyms>. |
| MLA | Smart Define. "testing thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/testing/thesaurus/synonyms> |