cosignatory
- n one of two or more signers of the same document (as a treaty or declaration)
- s signing jointly with others
- Senate minority leader Robert Dole, a cosignatory, has let it be known that he would vote against the bill in its present sweeping form.
- In spite of official denials, a rumor continued to spread that Viscount Ki-kujiro Ishii, now Japanese Ambassador to France, and cosignatory with ex-Secretary of State Robert .