- The definition of unnecessary is not needed.
An example of something unnecessary is a bowl of sugar for cooking meatballs.
unnecessary definition by Webster's New World
not necessary or required; needless
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- unnecessarily adverb
unnecessary definition by American Heritage Dictionary
Not necessary; needless.
- un·necˌes·sarˈi·ly adverb