underwritten

past participle of underwrite

(transitive) To write below or under; subscribe.
(intransitive, obsolete, transitive) 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) To act as an underwriter.
(transitive) To support, lend support to, guarantee the basis of.
(obsolete, transitive) To submit to; put up with.