cosign
Americanverb (used with or without object)
Etymology
Origin of cosign
Explanation
When you cosign a document, you sign it with another person. You and your business partner might cosign a lease for your new office space. You can use the verb cosign in two slightly different ways. First, if two (or more) people put their signatures on a form or letter, you can say they cosign it. In some cases — particularly when you're applying for a loan — a financial institution will require that you have someone cosign, essentially promising that if you can't repay the loan, he or she will be responsible for it. The word dates from the mid-20th century.
Vocabulary lists containing cosign
Personal Finance and Financial Literacy - Introductory
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Personal Finance and Financial Literacy - High School
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Personal Finance and Financial Literacy - Middle School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It is becoming more common to cosign on a mortgage, as the Skinners did.
From The Wall Street Journal ● Oct. 11, 2026
Anne Hathaway, Emily Blunt and Stanley Tucci will also reprise their roles for the highly anticipated movie, whose predecessor last year finally received a cosign from Anna Wintour.
From Los Angeles Times ● Apr. 2, 2026
The week Quentin Fottrell — the Moneyist — answered questions from a woman whose husband felt compelled to cosign a big loan for his brother.
From MarketWatch ● Jan. 23, 2026
Unlike other players on the Cavaliers, LeBron James refused to cosign the letter, claiming that he did not have “enough information” on the subject.
From Salon ● Apr. 20, 2024
I chuckled at that one, only because I spend so much time around boys, I can definitely cosign.
From "Patina" by Jason Reynolds
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Get a wordDefinitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
