- The definition of indubitable is something that is true without question or that is absolutely true beyond doubt.
An example of something that would be described as indubitable is the fact that the world is round.
indubitable definition by Webster's New World
that cannot be doubted; unquestionable
Origin: Classical Latin indubitabilis: see in- and amp; dubitable
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- indubitably adverb
indubitable definition by American Heritage Dictionary
Too apparent to be doubted; unquestionable.
- in·duˈbi·ta·bly adverb