0 one of two or more people who sign an official agreement or document --
1 one of two or more people, countries or organizations who sign an official agreement or document: --
2 a person or organization that signs a document already signed by another person, agreeing to pay that person’s debt if they fail to do so: --
3 one of two or more people or organizations who take equal responsibility for a financial arrangement: --
I made it clear that as a cosignatory to the joint declaration, we had a responsibility to ensure that the rights and freedoms enshrined in the joint declaration were maintained.
There is no reason to believe that there will be any precautions taken by ourselves and our cosignatory to protect the revenue.
It was an oath exchanged between the cosignatories of that.
Therefore, we can be cosignatories to some of the work we have done together.