Legal Definitions - countersign

COUNTERSIGN

Countersign is a verb that means to sign a document or agreement alongside another person to confirm their identity. This is done to ensure that the document is authentic and has been signed by the correct person.

Countersignature is the noun form of countersign.

Example 1: The bank manager asked me to countersign the check my husband had signed to verify his identity.

Example 2: The contract required both parties to countersign the agreement before it could be considered valid.

In Example 1, the bank manager asked the person to countersign the check to confirm that the signature on the check was indeed their husband's. In Example 2, both parties had to countersign the agreement to ensure that they both agreed to the terms and conditions of the contract.