Legal Definition
Underwritten refers to a formal agreement where one party (the underwriter) formally agrees to guarantee the financial obligations of another party, typically in an insurance context, ensuring that the policyholder's claims are covered according to the terms agreed upon.
Plain-English Translation
Imagine you have a big promise to pay for something, and someone else agrees to be the official guarantor that this promise is real. It means the person who wrote the policy officially agrees to back up the financial promises made in the contract.