- Definitions|2
- Thesaurus|817
- Abbreviations|0
29 entries under noun topic. ×
| spirited | |
| steel-hearted | |
| stout-hearted | |
| stout hearted | |
| swingeing | |
| unfearing | |
| venturesome | |
| venturous | |
| argufying |
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| APA | Smart Define. (2016). challenging thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/challenging/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "challenging thesaurus" https://smartdefine.org/challenging/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, challenging thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/challenging/thesaurus/synonyms>. |
| MLA | Smart Define. "challenging thesaurus" 2 March 2016. Web. 25 September 2026. <https://smartdefine.org/challenging/thesaurus/synonyms> |