- The definition of clueless is someone who doesn't know or understand something or is ignorant about a situation.
Someone who thinks their computer is broken when really it's just not plugged in is an example of clueless.
clueless 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.
- lacking clues or information
- stupid; obtuse
- ignorant or uninformed, specif. regarding a certain situation or matter: clueless about baseball
clueless definition by American Heritage Dictionary
Lacking understanding or knowledge.