When you shout, you speak as loudly as you can.
I can hear you – there's no need to shout.
‘Stop it!’ he shouted.
If you shout to someone who is a long way away, you speak very loudly so that they can hear you.
‘What are you doing down there?’ he shouted to Robin.
People waved and shouted to us as our train passed.
If you speak very loudly to someone who is near to you, for example because you are angry with them, don't say that you ‘shout to’ them. Say that you shout at them.
The captain shouted at him, ‘Get in! Get in!’
Dad shouted at us for making a mess.
You can use a to-infinitive with shout to or shout at. If you shout to someone to do something, or shout at them to do it, you tell them to do it by shouting.
A neighbour shouted to us from a window to stop the noise.
She shouted at him to go away.