- Definitions|1
- Thesaurus|404
- Abbreviations|0
| distressing(adjective, tough, severe, rough, difficult) | |
| effort | |
| enceinte | |
| exigent(adjective, severe, difficult, harsh, heavy) | |
| fatiguing(adjective, hard, severe, rough, difficult) | |
| fermented | |
| hairy(adjective, hard, severe, rough, difficult) | |
| hard-earned | |
| hard-fought | |
| impenetrable | |
| killing | |
| knockout | |
| labourious | |
| lowering | |
| mean(adjective, hard, rough, difficult, cruel) | |
| merciless(adjective, tough, severe, rough, difficult) | |
| murder(adjective, hard, tough, rough, difficult) | |
| plaguey | |
| scabrous(adjective, tough, rough, difficult, heavy) | |
| slavish(adjective, tough, rough, difficult, heavy) |
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| APA | Smart Define. (2015). backbreaking thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/backbreaking/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "backbreaking thesaurus" https://smartdefine.org/backbreaking/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, backbreaking thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/backbreaking/thesaurus/synonyms>. |
| MLA | Smart Define. "backbreaking thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/backbreaking/thesaurus/synonyms> |