- Definitions|1
- Thesaurus|584
- Abbreviations|0
| flat | |
| flat-out | |
| flat out | |
| frank | |
| global | |
| hard-as-nails(adjective, serious, resolute, persistent, unwavering) | |
| hardboiled(adjective, serious, resolute, persistent, unwavering) | |
| hubristic | |
| immutable | |
| implicative(adjective, complete, firm, certain, obedient) | |
| inappealable | |
| inarticulate(adjective, complete, firm, certain, obedient) | |
| indisputable | |
| inexorable | |
| inferential(adjective, complete, firm, certain, obedient) | |
| instant | |
| instinctive | |
| iron | |
| mean business(expression, adjective, serious, resolute, persistent) | |
| on ice(expression, adjective, solid, certain, serious) |
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| APA | Smart Define. (2015). unhesitating thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unhesitating/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unhesitating thesaurus" https://smartdefine.org/unhesitating/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, unhesitating thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unhesitating/thesaurus/synonyms>. |
| MLA | Smart Define. "unhesitating thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/unhesitating/thesaurus/synonyms> |