adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any of several people who sign a document together (especially a treaty)
2. 2
   one of two or more signers of the same document (as a treaty or declaration) wordnet

Adjective

1. 1
   signed or signing jointly not-comparable

Adjective

1. 1
   signing jointly with others wordnet

Synonyms

All synonyms

cosignercosignerendorserguarantorinsurerjoint

Etymology

From co- + signatory.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.