Definition of signatory in English:



  • A party that has signed an agreement, especially a state that has signed a treaty.

    ‘Britain is a signatory to the convention’
    [as modifier] ‘the signatory states’
    • ‘Discussions in London this week could end up with signatories committing themselves to a new measures to ensure that ships entering ports are safe.’
    • ‘Who among the list of signatories will be responsible for implementing your strategy?’
    • ‘The three countries are signatories to an international treaty to protect refugees and have a duty to live up to it, she said.’
    • ‘With 141 countries ratified, and another nine as signatories to the treaty, great progress has been made.’
    • ‘Wilson was to become a signatory of the Declaration of Independence and one of the finest legal minds in the new Republic.’
    • ‘The agreement also required the signatories to establish a joint team to monitor the pond preservation and recovery program.’
    • ‘Australia was a signatory to the original agreement and has taken an active role in negotiations since that time.’
    • ‘The signatories committed themselves to taking ‘necessary action’ to aid any member facing attack.’
    • ‘Counsel advised that not all of the defendants are signatories to the agreement.’
    • ‘In return, the 182 non-nuclear armed signatories to the treaty pledged to never acquire nuclear arms.’
    • ‘Killing, harming or trading in the animal is illegal worldwide, with more than 160 countries being signatories to the treaty.’
    • ‘Trade sanctions provide a means of encouraging participation in agreements and penalizing signatories that step out of line.’
    • ‘Many of the original mesmerists were signatories to the first declarations proclaiming the French revolution in 1789.’
    • ‘All the signatory countries will have to abide by the rules.’
    • ‘The Contract was simple, clear, and its signatories promised to abide by its terms regardless of who controlled Congress.’
    • ‘Treaty signatories also undertake not to dump or allow other states to dump radioactive materials or wastes in the zone of coverage.’
    • ‘Almost all the signatories to the treaty are going to miss their targets.’
    • ‘Another key to successful agreements and treaties is the capacity of signatories to meet the terms of the agreement.’
    • ‘India has refused to be a signatory to the agreements, calling them discriminatory.’
    • ‘In our programs, an explicit contract is signed, and we are always a signatory.’


Late 19th century: from Latin signatorius of sealing, from signat- marked (with a cross), from the verb signare.