(law) A second signature added to a document to affirm the validity of the signature of the first person. / The response to a sign or signal.

(transitive) To sign on the opposite side of (a document). / (transitive, by extension) To add a second signature to a document, affirming the validity of the signature of another person.

plural of countersign

Third-person singular simple present indicative form of countersign

simple past tense and past participle of countersign

present participle of countersign

plural of countersignal

A signal produced in response to another signal.

(sociology) To send a false or misleading signal.

present participle of countersignal