undersigned

[ adjective uhn-der-sahynd, uhn-der-sahynd; noun uhn-der-sahynd ]
/ adjective ˌʌn dərˈsaɪnd, ˈʌn dərˌsaɪnd; noun ˈʌn dərˌsaɪnd /

adjective

being the one or ones whose signature appears at the end of a letter or document: All of the undersigned persons are bound by the contract.
signed at the bottom or end of, as a writing: The undersigned names guarantee the good faith of the statement.

noun

the undersigned, the person or persons signing a letter or document.

Origin of undersigned

First recorded in 1635–45; under- + sign + -ed2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for undersigneds

undersigned

/ (ˈʌndəˌsaɪnd) /

noun

the undersigned the person or persons who have signed at the foot of a document, statement, etc

adjective

having signed one's name at the foot of a document, statement, etc
(of a document) signed at the foot
signed at the foot of a document
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012