a person who decides whether a bank should give an activity financial support and take responsibility for paying any costs if it fails

The second mortgage company’s internal underwriters also rejected us.

The principal underwriter will determine the advisability of continuing these payments.

a person or company that sells insurance policies (= money that you pay so that your costs will be paid if you have an accident, injury, etc.)

The insurance underwriters quietly agreed to settle the claim. 保险公司的核保师默然同意理赔。

The company is Britain's biggest motorcycle underwriter. 该公司是英国最大的摩托车保险商。