- Definitions|2
- Thesaurus|2.4k
- Abbreviations|0
61 entries under rigorous topic. ×
| onerous(adjective, dull, hard, tough, severe) | |
| trying(adjective, dull, hard, tough, severe) | |
| careful(adjective, harsh, rigid, strict, thorough) | |
| picky(adjective, tough, severe, grim, critical) | |
| challenging(verb, adjective, hard, tough, severe) | |
| rough(adjective, hard, tough, severe, difficult) | |
| rugged(adjective, hard, tough, severe, rough) | |
| formidable(adjective, tough, severe, rough, difficult) | |
| unsparing(adjective, tough, rough, difficult, harsh) | |
| inflexible(adjective, hard, severe, rough, difficult) | |
| knotty(adjective, hard, tough, severe, rough) | |
| tight(adjective, severe, difficult, stiff, rigid) | |
| uphill(adjective, hard, tough, severe, rough) | |
| heavy(adjective, dull, tough, severe, rough) | |
| mean(adjective, hard, severe, rough, difficult) | |
| nit-picking(adjective, severe, sharp, rough, cross) | |
| persnickety(adjective, harsh, critical, thorough, particular) | |
| acrimonious(adjective, severe, harsh, cross, stiff) | |
| compelling(adjective, severe, important, serious, stiff) | |
| hairy(adjective, hard, tough, severe, rough) |
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| APA | Smart Define. (2015). demanding thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/demanding/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "demanding thesaurus" https://smartdefine.org/demanding/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, demanding thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/demanding/thesaurus/synonyms>. |
| MLA | Smart Define. "demanding thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/demanding/thesaurus/synonyms> |