- The definition of a has-been is a person or thing that used to be popular or helpful.
An example of a has-been is a once famous actor who no one has heard about in decades.
has-been 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.
Informal a person or thing that was formerly popular or effective but is no longer so
has-been definition by American Heritage Dictionary
noun pl. has-beens Informal
One that is no longer famous, popular, successful, or useful.