- The definition of a ditz is slang for someone who is silly or who seems to have scattered thinking.
An example of ditz is a silly dumb person who just giggles all day.
ditz 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.
Slang a person thought of as being flighty, eccentric, silly, etc.
Origin: back-formation ; from ditsy
ditz definition by American Heritage Dictionary
A scatterbrained or eccentric person.
Origin: Back-formation from ditsy.