We found 4 definitions of cosign from 3 different sources.
Verb |
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cosign - sign and endorse (another person's signature), as for a loan | ||
co-sign | ||
endorse, indorse sign as evidence of legal transfer; "endorse cheques" | ||
cosign - sign jointly; "Husband and wife co-signed the lease" | ||
co-sign | ||
formalise, formalize, validate make formal or official; "We formalized the appointment and gave him a title" |