What is the meaning of Underwrite?

To write below or under; subscribe.

To subscribe (a document, policy etc.) with one's name.

To sign; to put one's name to.

To agree to pay by signing one's name; subscribe.

Specifically, to assume financial responsibility for something, and guarantee it against failure.

To act as an underwriter.

To support, lend support to, guarantee the basis of.

To submit to; put up with.

inflection of underwrītan:

1. first-person singular present indicative
2. singular present subjunctive

first-person singular present indicative

singular present subjunctive

inflection of underwrītan:

1. second-person singular preterite indicative
2. singular preterite subjunctive

second-person singular preterite indicative

singular preterite subjunctive

Source: wiktionary.org