Adjective: unwritten ,ún'ri-t(u)n
- Using speech rather than writing
"an unwritten tradition";
- oral
- Based on custom rather than documentation
"an unwritten law"; "rites … so ancient that they well might have had their unwritten origins in Aurignacian times"
- Said or done without having been planned or written in advance
"The unwritten agreement between neighbours kept the peace";
- ad-lib, spontaneous
See also: common-law, spoken, unscripted
Antonym: written
Encyclopedia: Unwritten