happen (happens 3rd person present) (happening present participle) (happened past tense & past participle )
1 verb Something that happens occurs or is done without being planned.
We cannot say for sure what will happen... V
2 verb If something happens, it occurs as a result of a situation or course of action.
She wondered what would happen if her parents found her... V
He trotted to the truck and switched on the ignition. Nothing happened. V
3 verb When something, especially something unpleasant, happens to you, it takes place and affects you.
If we had been spotted at that point, I don't know what would have happened to us... V to n
4 verb If you happen to do something, you do it by chance. If it happens that something is the case, it occurs by chance.
We happened to discover we had a friend in common... V to-inf
If it happens that I'm wanted badly somewhere, my mother will take the call and phone through to me here. it V that
5 You use as it happens in order to introduce a statement, especially one that is rather surprising.
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as it happens phrase V inflects, PHR with cl
She called Amy to see if she had any idea of her son's whereabouts. As it happened, Amy had.