- The definition of stressed out is being anxious, tired and irritable because of too much work or pressure.
An example of stressed out is the bad mood of someone who worked through the night and still hasn’t finished a project.
stressed-out 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.
tired, nervous, or depressed as a result of overwork, mental pressure, etc.
stressed-out definition by American Heritage Dictionary
Undergoing or suffering the effects of extreme stress: “frequent asides that are often exasperating to today's more stressed-out public” (James Wilcox).