unwritten meaning and definition

UNWRITTEN adjective

Definition of unwritten (adjective)

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
   • antonym: written
2. using speech rather than writing
   • "an oral tradition"; "an oral agreement"
   • synonyms: oral
3. said or done without having been planned or written in advance
   • "he made a few ad-lib remarks"
   • synonyms: ad-lib, spontaneous