- Definitions|2
- Thesaurus|2.4k
- Abbreviations|0
77 entries under severe topic. ×
| wearisome(adjective, tough, difficult, awkward) | |
| backbreaking(adjective, hard, tough, rough) | |
| bothersome(adjective, tough, difficult, awkward) | |
| difficile(adjective, tough, rough, difficult) | |
| distressing(adjective, bad, tough, rough) | |
| exhausting(adjective, hard, tough, rough) | |
| fateful(adjective, tough, important, significant) | |
| grievous(adjective, tough, difficult, unpleasant) | |
| grinding(adjective, tough, rough, difficult) | |
| intricate(adjective, hard, tough, difficult) | |
| tiring(adjective, hard, tough, rough) | |
| violent(adjective, hard, rough, difficult) | |
| deep(adjective, hard, tough, delicate) | |
| far-reaching(adjective, tough, important, significant) | |
| fatiguing(adjective, hard, tough, rough) | |
| grueling(adjective, hard, tough, difficult) | |
| irksome(adjective, tough, difficulty, rough) | |
| major(adjective, tough, unpleasant, important) | |
| meaning business(expression, adjective, tough, important) | |
| meaningful(adjective, tough, important, significant) |
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| APA | Smart Define. (2015). formidable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, formidable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>. |
| MLA | Smart Define. "formidable thesaurus" 17 July 2015. Web. 22 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms> |