- Definitions|2
- Thesaurus|817
- Abbreviations|0
260 entries under adjective topic. ×
| gamy | |
| gutty | |
| hardy | |
| hazardable | |
| heavy(tough, severe, difficult, awkward) | |
| herculean(tough, severe, difficult, awkward) | |
| high-spirited | |
| hopeful(advance, view, success, perhaps) | |
| hostile(demanding, argumentative, quarrelsome, exacting) | |
| important(importance, valuable, main, notable) | |
| in the long term(advance, view, success, perhaps) | |
| incensing(offensive, stimulating, disturbing, provoking) | |
| insurgent | |
| interrogative | |
| intoxicating(offensive, stimulating, disturbing, provoking) | |
| intrepid | |
| intricate(tough, severe, difficult, awkward) | |
| irksome(difficult, awkward, demanding, strenuous) | |
| knotty(difficult, complex, awkward, demanding) | |
| labored(great, tough, severe, difficult) |
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| APA | Smart Define. (2016). challenging thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/challenging/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "challenging thesaurus" https://smartdefine.org/challenging/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, challenging thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/challenging/thesaurus/synonyms>. |
| MLA | Smart Define. "challenging thesaurus" 2 March 2016. Web. 23 September 2026. <https://smartdefine.org/challenging/thesaurus/synonyms> |