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Definition of countersign:

  1. A private signal or word given to soldiers on guard; a watchword.
  2. To sign a document in addition to another to attest its authenticity.


give-and-take, intelligence, endorse, war cry, tidings, countersignature, cry, password, watchword, sign, witness, word, rallying cry, ratify, catchword, word of honor, sign on the dotted line, news, motto, John Hancock, sign away, sign on, signature, slogan, battle cry, parole, discussion.

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