based on custom rather than documentation; "an unwritten law"; "rites...so ancient that they well might have had their unwritten origins in Aurignacian times"- J.L.T.C.Spence
a serialized program usually dealing with sentimentalized family matters that is broadcast on radio or television (frequently sponsored by a company advertising soap products)
the act of starting a new operation or practice; "he opposed the inauguration of fluoridation"; "the startup of the new factory was delayed by strikes"
the ceremonial induction into a position; "the new president obviously enjoyed his inauguration"