uncomprehensible
1. [ adjective ] difficult to understand
Synonyms: incomprehensible
Examples:

"the most incomprehensible thing about the universe is that it is comprehensible"- A. Einstein

Related terms: comprehensible enigmatic dark lost impenetrable indecipherable unfathomable opaque inexplicable unintelligible unfathomable unclear
Similar spelling:   uncomprehended
  uncomprehending
  uncompensated