- Definitions|3
- Thesaurus|398
- Abbreviations|0
| ante up(expression, sign, rubber-stamp, undersign) | |
| appprove | |
| arcanum | |
| argument | |
| asservate(show, confirm, prove, appear, swear) | |
| attestation | |
| aver(show, confirm, prove, appear, swear) | |
| avow | |
| back up(verb, expression, approve, sanction, recommend) | |
| be party to | |
| boost(verb, approve, sanction, recommend, ratify) | |
| cacher | |
| certificate | |
| champion(verb, approve, sanction, recommend, ratify) | |
| cleverness | |
| clinch | |
| co-sign | |
| code word(expression, password) | |
| collateral(verb, secure, back, approve, endorse) | |
| commend(verb, approve, sanction, recommend, ratify) |
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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> |