1.
If you ~ 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 ~ 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