- Definitions|2
- Thesaurus|2.4k
- Abbreviations|0
416 entries under adjective topic. ×
| bothersome(tough, severe, difficult, awkward) | |
| brawny | |
| cantankerous(hard, evil, rough, nasty) | |
| critical | |
| cumbersome | |
| deadly | |
| difficile(tough, severe, rough, difficult) | |
| distressing(bad, tough, severe, rough) | |
| exhausting(hard, tough, severe, rough) | |
| fatal | |
| fateful(tough, severe, important, significant) | |
| firm | |
| grievous(tough, severe, difficult, unpleasant) | |
| grinding(tough, severe, rough, difficult) | |
| husky | |
| intricate(hard, tough, severe, difficult) | |
| lurid(awful, terrible, shocking, dreadful) | |
| mammoth(difficult, overwhelming) | |
| mettlesome | |
| moving(awful, wonderful, amazing, grand) |
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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> |