When did people start using the phrase "on accident"? Does this annoy anyone else? In this case the "by" is synonymous with "via" or "because of" as in "he died by drowning." One would never say "he died on drowning" or "he died on asphyxiation"
Anonymous2019-08-23T11:41:41Z
Children sometimes say "on accident" by analogy with "on purpose." Very clever of them to extrapolate, but it's incorrect.
Of course the standard expression is 'by accident'. I don't think I've heard or seen 'on accident' but other, similar mistakes are commonly made either by speakers of other languages, or by native speakers momentarily getting confused with a similar phrase and using the wrong preposition without realising it.
"on accident" is incorrect grammar, slang. I don't know where or how it started. I don't believe it is exclusive to any particular group. I've heard it in many places in the U.S. from many different types of people.