- The definition of congrats is a casual way to say congratulations.
An example of congrats is what a high school student says to a friend after they graduate.
congrats 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.
congrats definition by American Heritage Dictionary
Congratulations: sent him my congrats.