77 entries under strenuous topic. ×
| emotional | |
| excited enthusiastic(expression, stressful) | |
| expressive | |
| fervent | |
| fervid | |
| fierce(tough, demanding, stressful, exhausting) | |
| fiery(lively, irritable, courageous, argumentative) | |
| flaming | |
| frenzied | |
| glowing | |
| headlong | |
| heartfelt | |
| heated | |
| high-powered | |
| high-pressure | |
| hot(risky, dangerous, stressful, unsafe) | |
| hotblooded(adjective, lively, courageous, relentless) | |
| impassioned(irritable, argumentative, stressful) | |
| impetuous | |
| impulsive |
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| APA | Smart Define. (2016). difficult thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/difficult/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "difficult thesaurus" https://smartdefine.org/difficult/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, difficult thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/difficult/thesaurus/synonyms>. |
| MLA | Smart Define. "difficult thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/difficult/thesaurus/synonyms> |