"By accident" or "on accident"

[[REDACTED]]

nice try...?

Purposely - You did something on purpose. [lol]
Purposefully - You have a specific purpose in mind.

[YPrrrr]

Purposely - You did something on purpose. [lol]
Purposefully - You have a specific purpose in mind.

Ohhhhhhhh... my bad

I've never seen purposely used much

[Nyerp]

? I'm just saying that's the adverb form of purpose

ok

Purposely - You did something on purpose. [lol]
Purposefully - You have a specific purpose in mind.

i don't see the difference

[Thyme]

Connotatively, purposefully seems more "planned" while purposely is more like a spur of the moment.

[YPrrrr]

I think I'm just used to seeing "intentionally" rather than "purposely"

[Nyerp]

full...of purpose!

[Tomboh]

on accident is superior

[Hiro]

I say "on accident" 

[Wrench]

I use both of them, but use "by accident" more often.

[Sam]

...My mom yells at me ALL the time for this. 

[bluaki]

They're both supposedly proper, but "on accident" is an idiom.
I don't even know which I use more, since they both seem as natural to me. I like "accidentally" better.