Definition of sign off
1 : to announce the end of something (such as a message or broadcast)
2 : to approve or acknowledge something by or as if by a signature sign off on a memo
sign–offplay \ˈsī-ˌnȯf\ noun
First Known Use of sign off
Seen and Heard
What made you want to look up sign off? Please tell us where you read or heard it (including the quote, if possible).