A person or organisation with some sort of responsibility for another person or organisation, especially where the responsibility has a religious, legal, or financial aspect.
One that pays all or part of the cost of an event, a publication, or a media program, usually in exchange for advertising time.
A senior member of a twelve step or similar program assigned to a guide a new initiate and form a partnership with him.
To be a sponsor for.
To affirm the truth or reliability of.