accidentally on purpose
see on purpose, def. 2.
For All “Intents and Purposes” vs. “Intensive Purposes”Both for all intents and purposes and for all intensive purposes are widely used to mean “for all practical purposes” or “virtually.” But which one is correct? The standard idiom is for all intents and purposes, not for all intensive purposes, though if you were to say these two forms out loud it might be hard to tell the difference between the two. For all …
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.