- Definitions|3
- Thesaurus|398
- Abbreviations|0
| assure(verb, security, guarantee) | |
| authenticate(verb, state, show, sign, approve) | |
| corroborate(verb, state, show, sign, confirm) | |
| cosign(sign, security, rubber-stamp, undersign) | |
| promise(noun, verb, guarantee) | |
| sanction(verb, secure, back, approve, authorize) | |
| seal(verb, state, show, secure, back) | |
| accept | |
| autograph(verb, sign, rubber-stamp, undersign) | |
| countermark | |
| hint | |
| mark(verb, endorse) | |
| notarize(verb, sign, authorize, endorse, witness) | |
| support(verb, state, show, secure, back) | |
| symptom | |
| Word | |
| badge | |
| card | |
| clue | |
| insure(verb, secure, back, approve, endorse) |
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Countersign on
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| APA | Smart Define. (2015). countersign thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/countersign/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "countersign thesaurus" https://smartdefine.org/countersign/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, countersign thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/countersign/thesaurus/synonyms>. |
| MLA | Smart Define. "countersign thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/countersign/thesaurus/synonyms> |