countersign meaning: definition, etymology

countersign

noun

Etymology From Middle French contresigne. Equivalent to counter- + sign.

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.

verb

Etymology From Middle French contresigne. Equivalent to counter- + sign.

To sign on the opposite side of (a document).

Broadly To add a second signature to a document, affirming the validity of the signature of another person.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.