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A signatory puts his or her signature on a document that is also signed by others. In 1215 the English barons revolted against King John and forced him to join them as a signatory to the Magna Carta. This agreement stated the barons' own duties to the King but also assigned the barons clear rights and limited the King's power over them. Though the Magna Carta did nothing for the common people, it's often been called the first step toward democracy in the English-speaking countries.
Examples of signatory in a Sentence
a signatory of the Declaration of Independence
Recent Examples on the Web
Most signatories kept the same governance, incentives, and practices.
—
Steve Denning, Forbes.com, 19 June 2026
Roberts had also reportedly written a letter to the NPG’s board about the work, which had 50 signatories, including Churchill’s grandson.
—Maximilíano Durón, ARTnews.com, 18 June 2026
This router is also built with security in mind, as TP-Link is a signatory of the US Cybersecurity and Infrastructure Security Agency's Secure-by-Design pledge.
—George Yang, PC Magazine, 17 June 2026
New York City is a joint signatory to the hosting agreement with New Jersey for this World Cup, with eight games, including the final, being played at MetLife Stadium.
—Adam Crafton, New York Times, 16 June 2026
See All Example Sentences for signatory
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Steve Denning, Forbes.com, 19 June 2026
Roberts had also reportedly written a letter to the NPG’s board about the work, which had 50 signatories, including Churchill’s grandson.
—Maximilíano Durón, ARTnews.com, 18 June 2026
This router is also built with security in mind, as TP-Link is a signatory of the US Cybersecurity and Infrastructure Security Agency's Secure-by-Design pledge.
—George Yang, PC Magazine, 17 June 2026
New York City is a joint signatory to the hosting agreement with New Jersey for this World Cup, with eight games, including the final, being played at MetLife Stadium.
—Adam Crafton, New York Times, 16 June 2026
See All Example Sentences for signatory
Cite this Entry
“Signatory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/signatory. Accessed 23 Jun. 2026.
Copy CitationLegal Definition
signatory
noun
sig·na·to·ry
ˈsig-nə-ˌtōr-ē 
plural signatories
: a signer with another or others
signatories to a petition
especially
: a government bound with others by a signed convention
signatory
adjective
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