- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
275 entries under adjective topic. ×
| cantankerous | |
| cliffhanging | |
| climacteric | |
| cramping | |
| cutting | |
| distressful | |
| finicky(tough, difficult, problematic, trying) | |
| fussy(hard, tough, difficult, problematic) | |
| gnawing | |
| high-pressure | |
| killing | |
| no picnic(expression, tough, severe, rough) | |
| rocky | |
| stabbing | |
| strung-up | |
| tensional | |
| tiresome(hard, tough, severe, difficult) | |
| abstruse(hard, fancy, difficult, complex) | |
| accented | |
| adverse |
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| APA | Smart Define. (2016). arduous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, arduous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>. |
| MLA | Smart Define. "arduous thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms> |