in writing(redirected from put something in writing)
In a printed, written, or typed document. It's right there in writing that employees caught taking office supplies will be fired immediately. Please send me an email summarizing this conversation, so I have it all in writing should the issue come up in the future.
in written form rather that spoken. (*Typically: get something ~; have something ~; put something ~.) Be sure to get their salary offer in writing.