- Definitions|2
- Thesaurus|2.4k
- Abbreviations|0
104 entries under difficult topic. ×
| finicky | |
| fussy | |
| grueling(adjective, hard, tough, severe) | |
| involved(adjective, hard, rough, complex) | |
| irksome(adjective, tough, severe, difficulty, rough) | |
| labyrinthine(hard, awkward, tricky, complicated) | |
| merciless(adjective, appearance, tough, severe, rough) | |
| perplexing(hard, tough, awkward, tricky) | |
| problematical(adjective, hard, delicate, complex) | |
| puzzling(hard, awkward, tricky, complicated) | |
| rough go(adjective, overwhelming) | |
| tall order(adjective, overwhelming) | |
| toilful(adjective, tough, rough, heavy) | |
| tough proposition(adjective, overwhelming) | |
| unpleasant(adjective, hard, tough, evil, rough) | |
| uphill battle(expression, adjective, tough, rough) | |
| vexatious(adjective, hard, severe, evil, rough) | |
| awkward(adjective, tough, complex, demanding) | |
| discomforting | |
| embarrassing |
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| APA | Smart Define. (2015). formidable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, formidable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>. |
| MLA | Smart Define. "formidable thesaurus" 17 July 2015. Web. 20 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms> |