countersign — English Dictionary

Noun

1. A second signature added to a document to affirm the validity of the signature of the first person.

2. The response to a sign or signal.

   Examples

   Only those who give the countersign may enter the Masonic Lodge.

Verb

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

   Usage

   • Transitive

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

   Usage

   • broadly
   • Transitive

   Synonyms

   witness

Noun

1. a secret word or phrase known only to a restricted group

   Synonyms

   passwordwatchwordwordparole

   Broader terms

   positive identificationsecretarcanum

   Examples

   he forgot the password

2. a second confirming signature endorsing a document already signed

   Synonyms

   countersignature

   Broader terms

   signature

Verb

1. add one's signature to after another's to attest authenticity

   Broader terms

   sign

   Examples

   You must countersign on this line of the contract