incomprehensible
US /ɪnˌkɑːm.prəˈhen.sə.bəl/
UK /ɪnˌkɑːm.prəˈhen.sə.bəl/

1.
incomprensible, ininteligible
impossible to understand or comprehend; unintelligible.
:
•
The instructions were so complex that they were almost incomprehensible.
Las instrucciones eran tan complejas que eran casi incomprensibles.
•
His handwriting was completely incomprehensible.
Su letra era completamente incomprensible.