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Definition of co-sign verb from the Oxford Advanced Learner's Dictionary

co-sign

verb
 
/ˌkəʊ ˈsaɪn/
 
/ˌkəʊ ˈsaɪn/
[intransitive, transitive] (North American English)
Verb Forms
present simple I / you / we / they co-sign
 
/ˌkəʊ ˈsaɪn/
 
/ˌkəʊ ˈsaɪn/
he / she / it co-signs
 
/ˌkəʊ ˈsaɪnz/
 
/ˌkəʊ ˈsaɪnz/
past simple co-signed
 
/ˌkəʊ ˈsaɪnd/
 
/ˌkəʊ ˈsaɪnd/
past participle co-signed
 
/ˌkəʊ ˈsaɪnd/
 
/ˌkəʊ ˈsaɪnd/
-ing form co-signing
 
/ˌkəʊ ˈsaɪnɪŋ/
 
/ˌkəʊ ˈsaɪnɪŋ/
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  1. to sign a legal document for somebody else, in addition to their own signature, in order to promise that an agreement will be kept
    • See if your parents will co-sign.
    • co-sign for somebody Since you don't have a job, someone must co-sign for you.
    • co-sign something (for somebody) Her dad co-signed the lease for her apartment.
    Topics Law and justicec2
trait
noun
 
 
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