verb

• (transitive) To write below or under; subscribe.
• (transitive, intransitive, obsolete) To subscribe (a document, policy etc.) with one's name.
• (transitive) To sign; to put one's name to.
• (transitive) To agree to pay by signing one's name; subscribe.
• (transitive) Specifically, to assume financial responsibility for something, and guarantee it against failure.
• (intransitive, insurance) To act as an underwriter.
• (transitive) To support, lend support to, guarantee the basis of.
• (obsolete, transitive) To submit to; put up with.