| Main Entry: | hallmark |
| Part of Speech: | noun |
| Definition: | symbol, authentication |
Synonyms: |
badge, certification, device, emblem, endorsement, indication, mark, ratification, seal, sign, signet, stamp, sure sign, telltale sign, trademark |
| Main Entry: | smoking gun |
| Part of Speech: | noun |
| Definition: | damning evidence |
Synonyms: |
absolute indication, clue, conclusive evidence, corroboration, documentation, evidence, incontrovertible evidence, indisputable evidence, proof, straw in the wind, substantiation, support, sure sign, telltale, tip-off, unmistakable sign, verification |