- The definition of self explanatory is something that can be understood easily without any further instruction or information.
For most adults, using a toaster is self explanatory.
self-explanatory definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
explaining itself; obvious without explanation
self-explanatory definition by American Heritage Dictionary
Needing no explanation; obvious.