unwritten
verb
Definitions
To erase; to revert to a state where (something) was never written.
To nullify.
To deconstruct.
(computer engineering) To revert to a known state in so that new data can be written.
adjective
Definitions
Not written.
Oral or otherwise communicated without writing.
Implicit or understood but not formally articulated.
Example: It's an unwritten rule that you lock the gate when you leave the swimming pool.
Containing no writing; blank.
Example: unwritten paper