: difficulty in understanding or in being able to tell one thing from a similar thing
: a feeling or state of uncertainty
Word Root of CONFUSION
The Latin word fundere, meaning “to pour,” and its form fūsus give us the roots fund and fus. Words from the Latin fundere have something to do with pouring. To refund is to pour someone's money back to her or him. Confusion exists when too many things are poured together so that they become uncertain and unclear. A profusion is a great quantity that seems to have been poured forth from a plentiful supply.
Medical Definition of CONFUSION
: disturbance of consciousness characterized by inability to engage in orderly thought or by lack of power to distinguish, choose, or act decisively