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Added 9 October 2026

countersign

noun

In Latin: contrascibo, contrascribo Wiktionary

noun Definition from WordNet 3.1, Princeton University. More about countersign at Wordnik → Where our words come from →

A secret word or phrase known only to a restricted group.
he forgot the password
A second confirming signature endorsing a document already signed.

verb

Add one's signature to after another's to attest authenticity.
You must countersign on this line of the contract

Origin

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

From Wiktionary, via Kaikki.org (CC BY-SA)

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