unwritten
adjective C1- Not written.
- Oral or otherwise communicated without writing.
- Implicit or understood but not formally articulated. · It's an unwritten rule that you lock the gate when you leave the swimming pool.
- Containing no writing; blank. · unwritten paper
From the library
The Socialists had many branches in America, and the deceased had, no doubt, infringed their unwritten laws, and been tracked down by them.
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