Definition of "cosignatory" []

• Signed jointly. (adjective)
• One who cosigns. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "“Remember how I tricked you into signing me on as a cosignatory on your home-equity loan?”"
• "When he asked to be a cosignatory, his accessing my entire account had never even crossed my mind."
• "As we were finishing the paperwork, Matthew asked, Do you mind if we make me a cosignatory on the loan?"