- Definitions|2
- Thesaurus|1.8k
- Abbreviations|0
| straining | |
| tall(adjective, easy) | |
| terrible(adjective, hard, tough, severe, rough) | |
| testing(adjective, tough, severe, difficult, violent) | |
| threatening(hard, tough, severe, offensive, weighty) | |
| titanic(tough, severe, painful, problematic, trying) | |
| uninteresting(adjective, dull, boring, tedious, dreary) | |
| unpleasant(hard, severe, difficult, tender, offensive) | |
| unremitting | |
| unsparing(adjective, tough, rough, difficult, heavy) | |
| unwavering | |
| vexatious(adjective, dull, difficult, tender, boring) | |
| working(adjective, working) | |
| worrying(adjective, tough, severe, important, significant) | |
| zealous | |
| abstruse | |
| alarming(hard, severe, offensive, distressing, upsetting) | |
| all-out | |
| annoying(adjective, dull, boring, tedious, dreary) | |
| ardent |
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| APA | Smart Define. (2016). laborious thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/laborious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "laborious thesaurus" https://smartdefine.org/laborious/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, laborious thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/laborious/thesaurus/synonyms>. |
| MLA | Smart Define. "laborious thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/laborious/thesaurus/synonyms> |