Difficult or impossible to understand or comprehend; incomprehensible.
Unintelligible remarks; an unintelligible prose passage.
Not intelligible; that cannot be understood; incomprehensible.
The definition of unintelligible is cannot be understood.
An example of something unintelligible is a voice mail message left on a cell phone with a bad connection.
Origin of unintelligible
un- +"Ž intelligible