- Definitions|2
- Thesaurus|2.4k
- Abbreviations|0
104 entries under tough topic. ×
| mighty(adjective, feature, characteristic, strong) | |
| terrific(adjective, feature, characteristic, bad, great) | |
| heavy(adjective, feature, characteristic, severe) | |
| colossal(adjective, feature, characteristic, great) | |
| herculean(adjective, feature, characteristic, severe) | |
| immense(adjective, feature, characteristic, great) | |
| powerful(adjective, strong, difficult, overwhelming) | |
| awesome(adjective, great, difficult, wonderful) | |
| frightful(adjective, great, terrible, fear) | |
| onerous(adjective, severe, difficulty, difficult) | |
| arduous(adjective, severe, difficulty, rough) | |
| redoubtable(adjective, awful, terrible, fear) | |
| impressive(adjective, difficult, awful, wonderful) | |
| appalling(adjective, bad, great, fear) | |
| laborious(adjective, severe, difficulty, rough) | |
| difficult(adjective, hard, severe, evil) | |
| dire(adjective, awful, fear, horrible) | |
| hard(adjective, severe, evil, difficulty) | |
| awful(adjective, great, terrible, fear) | |
| burdensome(adjective, severe, difficult, heavy) |
For more, visit
Formidable on
Power Thesaurus
| APA | Smart Define. (2015). formidable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, formidable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>. |
| MLA | Smart Define. "formidable thesaurus" 17 July 2015. Web. 23 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms> |