Adviser, Ambition, Announcer, Antecedent, Aspiration, Author, Authority, Authorship, Basis, Beginning, Birthplace, Bonanza, Calling, Cause, Channel, Commencement, Communicant, Communicator, Conception, Consideration, Cornucopia, Creator, Dawn, Dawning, Derivation, Determinant, Documentation, Font, Fount, Fountain, Genesis, Goal, Grapevine, Ground, Head, Headwaters, Ideal, Inception, Informant, Informer, Inspiration, Intention, Interviewee, Lode, Lodestar, Mainspring, Matter, Mine, Monitor, Mother, Motive, Mouthpiece, Onset, Opening, Origin, Original, Origination, Originator, Outset, Parent, Paternity, Press, Principle, Provenance, Publisher, Quarry, Radical, Radio, Radix, Reason, Reporter, Resource, Rise, Rising, Root, Roots, Sake, Score, Spokesman, Spring, Staple, Start, Starting, Stem, Stock, Television, Teller, Tipster, Tout, Vein, Vocation, Well, Wellhead, Whence, Witness