go off phrasal verb ( see also ↑ go )
1 . LEAVE to leave a place, especially in order to do something:
John decided to go off on his own.
go off to
He went off to work as usual.
go off to do something
Geoff went off to play golf.
2 . EXPLODE to explode or fire:
The bomb went off at 6.30 this morning.
Fireworks were going off all over the city.
The gun went off and the bullet went flying over his head.
3 . MAKE A NOISE if an ↑ alarm goes off, it makes a noise to warn you about something:
The thieves ran away when the alarm went off.
I’ve set the alarm clock to go off at 7 am.
4 . STOP LIKING go off somebody/something British English informal to stop liking something or someone:
Many women go off coffee during pregnancy.
go off doing something
I’ve gone off cooking lately.
5 . STOP WORKING if a machine or piece of equipment goes off, it stops working:
The central heating goes off at 9 o'clock.
Suddenly, all the lights went off.
6 . go off well/badly etc to happen in a particular way:
The party went off very well.
7 . HAPPEN British English spoken informal to happen SYN go on :
There was a blazing row going off next door.
8 . DECAY British English if food goes off, it becomes too bad to eat:
The milk’s gone off.
9 . SLEEP to go to sleep:
I’d just gone off to sleep when the phone rang.
10 . GET WORSE British English informal to get worse:
He’s a singer whose talent has gone off in recent years.