What is another word for counter-signature?
Pronunciation: [kˈa͡ʊntəsˈɪɡnɪt͡ʃə] (IPA) 
Counter-signature is a term that is commonly used when referring to the signing of legal documents. However, there are several synonyms that can be used in place of this term, each with their unique connotations. One of these synonyms is endorsement, which refers to the approval or support of a document by a party other than the original signatory. Another synonym is authentication, which refers to verifying the authenticity of a document or signature. Additionally, the term co-signature can also be used interchangeably with counter-signature, as both refer to the signature of a second party to a document. Whatever term is used, the implication is always the same: that a second party has given their approval or endorsement to a legal document.
