- The definition of aren't is are not.
An example of aren't is saying two friends will not be attending your party; aren't attending.
aren't 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.
- are not
- am not: used occasionally in questions: I'm helping you, aren't I?
aren't definition by American Heritage Dictionary
Contraction of are not. See Usage Note at ain't.