Unwritten - Definition

adj 1: 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 [ant: written]
2: using speech rather than writing; "an oral tradition"; "an
oral agreement" [syn: oral, unwritten]
3: said or done without having been planned or written in
advance; "he made a few ad-lib remarks" [syn: ad-lib,
spontaneous, unwritten]