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countersign
noun
- a signature added to a document previously signed by another, for authentication or confirmation
- a secret sign or signal in answer to another, as in a secret society
- Mil. a secret word or signal which must be given to a guard or sentry by someone wishing to pass; password
transitive verb
to authenticate (a previously signed document) by adding one's own signature
Related Forms:
- countersignature noun
See countersign in American Heritage Dictionary 4
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