Definitions:

1. a mental state characterized by a lack of clear and orderly thought and behavior noun
   • a confusion of impressions
2. a mistake that results from taking one thing to be another noun
   • I changed my name in order to avoid confusion with the notorious outlaw.
3. an act causing a disorderly combination of elements with identities lost and distinctions blended noun
   • the confusion of tongues at the Tower of Babel
4. disorder resulting from a failure to behave predictably noun
   • the army retreated in confusion

Synonyms:

• confusedness
• disarray
• discombobulation
• mental confusion
• mix-up
• muddiness