107 entries under demanding topic. ×
| crushing(severe, harsh, heavy, painful) | |
| fierce(tough, strenuous, stressful, exhausting) | |
| sapping(adjective, tedious, strenuous, fatal) | |
| solemn(adjective, hard, severe, rough, tedious) | |
| superincumbent(heavy, troublesome, taxing, onerous) | |
| uncharitable(adjective, exacting) | |
| uphill battle(expression, adjective, tough, rough, heavy) |
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| APA | Smart Define. (2016). difficult thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/difficult/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "difficult thesaurus" https://smartdefine.org/difficult/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, difficult thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/difficult/thesaurus/synonyms>. |
| MLA | Smart Define. "difficult thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/difficult/thesaurus/synonyms> |