The phrasal verb "sign off" is predominantly used in informal contexts, though it can appear in formal communication, particularly in professional or military environments. The primary use of "sign off" is to indicate the conclusion of a communication, typically used when ending a letter, email, or a broadcast message. In formal settings, one might use it to indicate approval or expressed consent for decisions, such as a manager "signing off" on a project. Informally, it is prevalent in digital communication, such as when ending a radio conversation or signing out of an account or online presence. The phrase has evolved with digital communication advancements and is now widely used in virtual meetings or among broadcast media professionals.
B2
UpperIntermediate
1. To end a broadcast or transmission.
The radio host signed off with his usual farewell message.
After two hours of lively discussion, the podcast hosts decided to sign off for the day.
2. To formally conclude a letter or document.
She signed off the email with her usual 'Best regards'.
Before we sign off on the contract, let's review the terms once more.
3. To indicate one's approval of something.
The manager signed off on the project so we can start work next week.
They need their supervisor to sign off before proceeding with the new plans.
4. To stop engaging in an online or electronic session.
Don't forget to sign off after checking your online account.
After reading the last email, he signed off his computer.