Further affiant sayeth naught (with variations also using the words “saith” and “not”) is a traditional phrase dating back to centuries old English tradition. The words simply are added to the end of affidavits and other legal documents to signify that the person has nothing else to say about the issue being discussed. While the term is still sometimes used in American legal documents, people often describe the phrase as a prime example of outdated legalese that should no longer be used. At any rate, the term often is replaced with more modern language in affidavits.
[Last updated in December of 2022 by the Wex Definitions Team]