sign off phrasal verb (see also sign)

1. informal to end a radio or television programme by saying goodbye

2. to write your final message at the end of an informal letter:
It’s getting late, so I’ll sign off now. Love, John.

3. sign somebody off British English if a doctor signs someone off, he or she gives them a note saying that they are ill and not able to work:
For the last month, she has been signed off sick from work.

4. sign something ↔ off British English, sign off on something American English to show that you approve of a plan or that something is finished by signing an official document:
Major repainting work now needs to be signed off by a qualified engineer.

[TahlilGaran] Dictionary of Contemporary English ▲

sign off
sign off (on (something))
to officially agree to or support something.
Mary has to sign off on any expenses over $2,500.

A judge must sign off on a search of anyone's property.

If all parties sign off, the settlement would end eight years of court battles.

Usage notes: often used when someone agrees to something by putting their signature on an official document
to end a television or radio broadcast.
Both news programs came on the air at 4:36 p.m. and both signed off at 4:59 p.m.

What will the network air on Tuesdays now that one of its most popular programs is signing off?

[TahlilGaran] English Idioms Dictionary ▲

sign off
v.
1. To end a program on radio or television.
That TV newscaster always signs off by saluting.
2. To stop broadcasting for the day.
That TV station always signs off after the late movie.

[TahlilGaran] English Idioms Dictionary ▲