|Origin:||hap ( HAPPY)|
hap‧pen S1 W1 [intransitive]
when something happens, there is an event, especially one that is not planned [= occur]:
When did the accident happen?
It's impossible to predict what will happen next.
Something terrible has happened.
She carried on as if nothing had happened.
This was bound to happen sooner or later.
This kind of thing happens all the time.
We'll still be friends, whatever happens.
if something happens to someone or something, they are affected by an event:
He should be here by now - something must have happened to him.
The same thing happened to me last year.
What's happened to your coat? It's all ripped.
if you happen to do something, you do it by chance:
I happened to see James in town.
used when telling someone something in an angry way:
This happens to be my house!
used to tell someone something that is surprising, interesting, or useful:
As it happens, I know someone who might be able to help.
used to tell someone not to worry about a mistake they have made, an accident they have caused etc:
It's not your fault - these things happen.
used to ask where a person or thing is now:
Whatever happened to Steve? I haven't seen him for years.
➔ accidents (will) happenat accident (5)
happen on/upon somebody/somethingphrasal verb
I happened on the restaurant by chance.