it means
Health And Safety At Work Act (Common abbreviations used are HSWA 1974, HASWA, or HASAWA).
HASAWA was established in 1974 and it means Health and Safety at Work Act and it is used to protect people at work.
Health and Safety at Work etc. Act 1974.
If you mean something happened that was not intentional, it should be by accident. "The boy stepped on the cat's tail by accident."
If you mean accident as in she got in an accident, that's how you spell it
it means you did not mean to do it on perpose
Perhaps you mean accident prone?? Meaning your are likely to cause an accident if there is a possibility of doing so.
Accident
This is French for "what do you do when you have an accident?"
Cerebral Vascular Accident, also known as a stroke.CVA is cerebrovascular accident, or strokeCerebrovascular accident, more commonly, stroke.Cerebrovascular Accident
Suicide "by accident" :)
The word "accidentally" is a better than "on accident." I don't believe that on accident is grammatically correct. I am not sure what you mean by when to use it.