/ˌʌndəˈraɪt ||; ˌʌndɚˈraɪt/verb [T] (past tense underwrote /-ˈrəʊt ||; -ˈrot/ past participle underwritten /-ˈrɪtn ||; -ˈrɪtṇ/) to accept responsibility for an insurance policy by agreeing to pay if there is any damage or loss （在保险单上）签名接受（投保） ➔underwriter noun [C]