That discovery was quite accidental.
As such is the case, I am sorry I can't accept your kind invitation.
An accident delayed us for half an hour.
We must take into account the fact that he is young.
We punished him according to the rules.
We met her by accident.
Many words are pronounced according to the spelling, but some are not.
That accounts for why the door was open.
I'm very sorry, we can't accept your request.
The accident arose from a simple mistake.