Synonyms for underwrite
verb
To subscribe
sign, initial, seal; see endorse 2.
To approve
accede, consent, okay*; see approve 1.
To support financially
finance, help, pay, support, guarantee, subsidize, endow, fund, refund, provide security, provide capital, provide financing, put up the money for, put up the collateral for, float a stock issue, float bonds, provide subvention for.
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