<p><strong>Adjective</strong></p><ul><li>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.</li><li>signed at the bottom or end of, as a writing: The undersigned names guarantee the good faith of the statement.</li></ul><p><strong>Noun</strong></p><ul><li>the undersigned, the person or persons signing a letter or document.</li></ul>