incoherence

Short definition from Wiktionary

Noun

1. 1
   The quality of being incoherent: The quality of not making logical sense or of not being logically connected.
2. 2
   The quality of being incoherent: The quality of not holding together physically.
3. 3
   Something incoherent; something that does not make logical sense or is not logically connected.
4. 4
   Thinking or speech that is so disorganized that it is essentially inapprehensible to others.