implausible [im plô′zə bəl]
YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
The definition of implausible is something that is unlikely to be true.
A plot point in a story that makes no sense and that readers universally agree would not be something the characters do is an example of something that would be described as implausible.
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Difficult to believe; not plausible.