- Definitions|3
- Thesaurus|871
- Abbreviations|0
| argue(verb, state, show, sign, confirm) | |
| ascertain(verb, state, show, determine, confirm) | |
| attest to(expression, verify, validate) | |
| attestation | |
| authenticated | |
| authentication | |
| authorise | |
| bear witness(verb, expression, state, show, sign) | |
| bear witness to(verb, expression, phrasal verb) | |
| bolster | |
| buttress | |
| buy(verb, support, back, sign, prove) | |
| check on(verb, expression, confirm, story, verify) | |
| check up(verb, expression, idea, confirm, prove) | |
| check up on(verb, expression, idiom, check, confirm) | |
| chronicle(verb, detail, record) | |
| commend(verb, support, praise, favor, back) | |
| connote(verb, evince) | |
| constitute(endorse, prove, verify, substantiate, corroborate) | |
| countenance(verb, support, favor, back, approve) |
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| APA | Smart Define. (2015). authenticate thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/authenticate/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "authenticate thesaurus" https://smartdefine.org/authenticate/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, authenticate thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/authenticate/thesaurus/synonyms>. |
| MLA | Smart Define. "authenticate thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/authenticate/thesaurus/synonyms> |