Is it by accident or on accident?

Answer:
By accident (As 'by' is being used as a stand in for 'as a result of an', which is similar to, 'as a result of an action of Jeff', or 'by Jeff')


This also raises the question "why is it 'by accident' but 'on purpose'?" 'On purpose' implies a following of a purpose, (i.e. "on point").
First answer by Iggith. Last edit by K.d.brossa. Contributor trust: 2 [recommend contributor recommended]. Question popularity: 4 [recommend question].