| defended(verb, adjective, secure, firm, guarded) | |
| deposited | |
| established(state, establishment) | |
| express | |
| fast | |
| fastened | |
| for a fact(expression, adjective, firm, certain, definite) | |
| genuine(clear, certain, valid, unquestionable, undisputable) | |
| guarantee | |
| guaranty | |
| guarantying | |
| harmless | |
| incontestable(adjective, certain, unquestionable, undisputable) | |
| incontrovertible(clear, certain, valid, unquestionable, undisputable) | |
| indisputable(clear, simple, plain, certain, straightforward) | |
| indubitable(adjective, clear, sound, firm, plain) | |
| ineluctable(certain, unquestionable, undisputable) | |
| inescapable(certain, unquestionable, undisputable) | |
| intended | |
| invulnerable |
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| APA | Smart Define. (2015). guaranteed thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/guaranteed/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "guaranteed thesaurus" https://smartdefine.org/guaranteed/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, guaranteed thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/guaranteed/thesaurus/synonyms>. |
| MLA | Smart Define. "guaranteed thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/guaranteed/thesaurus/synonyms> |