- Definitions|2
- Thesaurus|2.4k
- Abbreviations|0
416 entries under adjective topic. ×
| largest(feature, characteristic, size) | |
| mountain(feature, characteristic, size) | |
| swingeing(feature, characteristic, size) | |
| powerful(strong, tough, difficult, overwhelming) | |
| scary(feeling, cause, fear, frightening) | |
| fearful(great, awful, fear, horrible) | |
| intimidating(difficult, awful, horrible, shocking) | |
| awesome(great, tough, difficult, wonderful) | |
| frightful(great, tough, terrible, fear) | |
| onerous(tough, severe, difficulty, difficult) | |
| terrible(appearance, bad, great, nasty) | |
| arduous(tough, severe, difficulty, rough) | |
| dreadful(great, unpleasant, awful, terrible) | |
| redoubtable(tough, awful, terrible, fear) | |
| tough(strong, severe, difficulty, rough) | |
| impressive(tough, difficult, awful, wonderful) | |
| appalling(bad, great, tough, fear) | |
| laborious(tough, severe, difficulty, rough) | |
| difficult(hard, tough, severe, evil) | |
| dire(tough, awful, fear, horrible) |
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| APA | Smart Define. (2015). formidable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, formidable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>. |
| MLA | Smart Define. "formidable thesaurus" 17 July 2015. Web. 21 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms> |