- Anytime is defined as something that can happen at any moment or any point in time.
Telling someone they can call you 24/7 is an example of telling someone they can call you anytime.
anytime 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.
at any time
anytime definition by American Heritage Dictionary
At any time.