- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
84 entries under tough topic. ×
| tiring(adjective, dull, difficult, awkward) | |
| formidable(adjective, severe, difficulty, rough) | |
| heavy(adjective, dull, severe, rough) | |
| exacting(adjective, dull, hard, severe) | |
| rigorous(adjective, hard, severe, rough) | |
| wearisome(adjective, dull, severe, difficult) | |
| stiff(adjective, hard, severe, rough) | |
| effortful(adjective, hard, great, rough) | |
| time-consuming(hard, difficult, slow, heavy) | |
| Herculean(adjective, severe, difficult, awkward) | |
| irritating(adjective, dull, severe, boring) | |
| labored(adjective, hard, great, rough) | |
| wearing(adjective, dull, hard, difficult) | |
| bothersome(adjective, hard, severe, difficult) | |
| challenging(adjective, hard, great, severe) | |
| titanic(severe, painful, problematic, trying) | |
| finicky(adjective, difficult, problematic, trying) | |
| fussy(adjective, hard, difficult, problematic) | |
| gargantuan(severe, painful, problematic, trying) | |
| no picnic(expression, adjective, severe, rough) |
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| APA | Smart Define. (2016). arduous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, arduous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>. |
| MLA | Smart Define. "arduous thesaurus" 26 February 2016. Web. 28 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms> |