- Definitions|2
- Thesaurus|2.4k
- Abbreviations|0
62 entries under demanding topic. ×
| difficile(adjective, tough, severe, rough, difficult) | |
| distressing(adjective, bad, tough, severe, rough) | |
| exhausting(adjective, hard, tough, severe, rough) | |
| grievous(adjective, tough, severe, difficult, unpleasant) | |
| grinding(adjective, tough, severe, rough, difficult) | |
| intricate(adjective, hard, tough, severe, difficult) | |
| slavish(adjective, tough, rough, difficult, heavy) | |
| tiring(adjective, hard, tough, severe, rough) | |
| violent(adjective, hard, severe, rough, difficult) | |
| fatiguing(adjective, hard, tough, severe, rough) | |
| grueling(adjective, hard, tough, severe, difficult) | |
| involved(adjective, hard, rough, difficult, complex) | |
| irksome(adjective, tough, severe, difficulty, rough) | |
| merciless(adjective, appearance, tough, severe, rough) | |
| problematical(adjective, hard, difficult, delicate, complex) | |
| toilful(adjective, tough, rough, difficult, heavy) | |
| uphill battle(expression, adjective, tough, rough, difficult) | |
| vexatious(adjective, hard, severe, evil, rough) | |
| awkward(adjective, tough, difficult, complex) | |
| scabrous(adjective, tough, rough, difficult, heavy) |
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| APA | Smart Define. (2015). formidable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, formidable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>. |
| MLA | Smart Define. "formidable thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms> |