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countersign

C2
Rare

Pronunciation

UK

  • /kˈaʊntəsˌaɪn/

US

    Meanings

    Verb

    1. to sign a document after someone else to confirm or authorize it

    Noun

    1. a second signature that confirms or authorizes a document

    2. a secret word or signal used to answer a guard's challenge

    Beyond the definition

    Imagine you're a spy slipping into enemy territory. You don't just walk up to the gate and say "Open Sesame!" Instead, you offer the countersign—a prearranged word or phrase that proves you are who you claim to be. In military and security contexts, it is the answer to a challenge, confirming that you're friendly and allowed to pass.

    However, the word is just as common in the world of paperwork. To countersign a document means to add a second signature to one already signed by another person. Whether it's a secret whistle in the woods or a supervisor's signature on a legal contract, a countersign serves as a secondary layer of trust, ensuring that access or authority is properly validated.

    Examples

    1. 1

      Official form

      The passport form has to be countersigned by a teacher or doctor.

    2. 2

      Contract approval

      She signed the contract in the morning, and her manager countersigned it that afternoon.

    3. 3

      Security checkpoint

      At the checkpoint, the guard asked for the day's countersign before opening the gate.

    See also

    Similar

    Shades of meaning

    Contrast

    • sign
    • withhold signature

    Used with (collocations)

    • countersign a document
    • countersign an agreement
    • countersigned by

    Word family

    Explore

    Forms and spellings

    4 forms open this card.

    Main spelling

    • countersignnounverb

    Forms

    • countersignedpast tenseverbnoun
    • countersigning-ing formverbnoun
    • countersignspluralnounverb