As nouns the difference between signer and cosigner
is that signer is one who signs something while cosigner is a cosignatory.
signer
English
Noun
(
en noun)
One who signs something.
- John Hancock is a famous signer of the Declaration of Independence.
One who uses sign language.
Related terms
* signatory
Anagrams
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cosigner
English
Noun
(
en noun)
A cosignatory
(legal) A person who accepts joint responsibility for the debt of another