1.
when a performer goes on , they begin their performance :
She doesn't go on until Act 2.
2.
( in sport ) to join a team as a substitute during a game :
Cole went on in place of Beckham just before half-time.
3.
when a light, the electricity, etc. goes on , it starts to work :
Suddenly all the lights went on.
OPP go off
4.
( of time ) to pass :
She became more and more talkative as the evening went on.
5.
(usually be going on ) to happen :
What's going on here?
6.
if a situation goes on , it continues without changing :
This cannot be allowed to go on.
How much longer will this hot weather go on for?
We can't go on like this —we seem to be always arguing.
7.
to continue speaking, after a short pause :
She hesitated for a moment and then went on.
[+ speech ]
'You know,' he went on, 'I think my brother could help you.'
8.
used to encourage sb to do sth :
Go on! Have another drink!
Go on—jump!