- Definitions|1
- Thesaurus|302
- Abbreviations|0
44 entries under severe topic. ×
| formidable(adjective, tough, difficult, heavy) | |
| heavy(adjective, tough, difficult, harsh) | |
| tough(adjective, great, rough, difficult) | |
| backbreaking(adjective, hard, rough, difficult) | |
| burdensome(adjective, tough, rough, difficult) | |
| uphill(adjective, great, tough, difficult) | |
| demanding(adjective, tough, difficult, harsh) | |
| knotty(adjective, hard, tough, rough) | |
| toilsome(adjective, hard, great, tough) | |
| exacting(adjective, tough, difficult, harsh) | |
| painful(adjective, tough, difficult, problematic) | |
| trying(verb, adjective, hard, tough) | |
| operose(adjective, tough, difficult, awkward) | |
| wearisome(adjective, tough, difficult, awkward) | |
| challenging(verb, adjective, great, tough) | |
| exhausting(adjective, hard, rough, difficult) | |
| herculean(adjective, tough, difficult, awkward) | |
| stiff(tough, difficult, painful, problematic) | |
| titanic(tough, painful, problematic, trying) | |
| troublesome(adjective, tough, difficult, awkward) |
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| APA | Smart Define. (2015). effortful thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/effortful/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "effortful thesaurus" https://smartdefine.org/effortful/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, effortful thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/effortful/thesaurus/synonyms>. |
| MLA | Smart Define. "effortful thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/effortful/thesaurus/synonyms> |