unwritten

[ uhn-rit-n ]
/ ʌnˈrɪt n /

adjective

not actually formulated or expressed; customary; traditional.
not written; not put in writing or print; oral: an unwritten agreement.
containing no writing; blank.

Origin of unwritten

1325–75; Middle English unwriten; see un-1, written

ANTONYMS FOR unwritten

1 specified, stipulated, designated.

Example sentences from the Web for unwritten

British Dictionary definitions for unwritten

unwritten
/ (ʌnˈrɪtən) /

adjective

not printed or in writing
effective only through custom; traditional
without writing upon it