- Definitions|2
- Thesaurus|2.4k
- Abbreviations|0
101 entries under hard topic. ×
| pesky(adjective, evil, rough, nasty) | |
| problematical(adjective, difficult, delicate, complex) | |
| puzzling(difficult, awkward, tricky, complicated) | |
| rotten(adjective, bad, evil, rough) | |
| scurrilous(adjective, evil, rough, nasty) | |
| shameless(adjective, evil, rough, nasty) | |
| sinking(adjective, evil, rough, nasty) | |
| snide(adjective, evil, rough, nasty) | |
| sour(adjective, evil, rough, nasty) | |
| touch(adjective, evil, rough, nasty) | |
| unfriendly(adjective, evil, rough, nasty) | |
| unpleasant(adjective, tough, evil, rough) | |
| unscrupulous(adjective, evil, rough, nasty) | |
| vexatious(adjective, severe, evil, rough) | |
| vicious(adjective, evil, rough, nasty) | |
| vile(adjective, evil, rough, nasty) | |
| abstract(delicate, complex, tricky, complicated) | |
| bewildering(tricky, complicated) | |
| confounding(delicate, complex, tricky, complicated) | |
| confusing(delicate, complex, tricky, complicated) |
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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> |