- Definitions|3
- Thesaurus|871
- Abbreviations|0
63 entries under sign topic. ×
| confirm(verb, support, state, show, determine) | |
| certify(verb, support, state, show, determine) | |
| corroborate(verb, support, state, show, determine) | |
| substantiate(verb, support, show, determine, establish) | |
| affirm(verb, support, show, determine, praise) | |
| endorse(verb, support, state, check, show) | |
| support(verb, show, favor, back) | |
| attest(verb, support, state, show, determine) | |
| ratify(verb, support, show, determine, praise) | |
| bear out(verb, expression, phrasal verb, support, show) | |
| approve(verb, support, state, praise, favor) | |
| warrant(verb, support, show, determine, praise) | |
| back(verb, support, show, determine, favor) | |
| justify(verb, support, show, determine, back) | |
| sanction(verb, support, state, favor, back) | |
| notarize(verb, authorize, endorse, witness) | |
| uphold(verb, support, show, determine, favor) | |
| vouch(verb, support, state, back) | |
| countersign(verb, state, show, approve) | |
| seal(verb, show, settle, confirm) |
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| APA | Smart Define. (2015). authenticate thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/authenticate/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "authenticate thesaurus" https://smartdefine.org/authenticate/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, authenticate thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/authenticate/thesaurus/synonyms>. |
| MLA | Smart Define. "authenticate thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/authenticate/thesaurus/synonyms> |