1.
If you go off someone or something, you stop liking them. ( BRIT INFORMAL )
‘Why have they gone off him now?’—‘It could be something he said.’...
I started to go off the idea.
PHRASAL VERB : V P n , V P n
2.
If an explosive device or a gun goes off , it explodes or fires.
A few minutes later the bomb went off, destroying the vehicle.
PHRASAL VERB : V P
3.
If an alarm bell goes off , it makes a sudden loud noise.
Then the fire alarm went off. I just grabbed my clothes and ran out.
PHRASAL VERB : V P
4.
If an electrical device goes off , it stops operating.
As the water came in the windows, all the lights went off.
PHRASAL VERB : V P
5.
If you say how an organized event went off , you are saying whether everything happened in the way that was planned or hoped.
The meeting went off all right...
PHRASAL VERB : V P adv / prep
6.
Food or drink that has gone off has gone bad. ( BRIT )
Don’t eat that! It’s mouldy. It’s gone off!
PHRASAL VERB : V P