incontrovertible

US /ɪnˌkɑːn.trəˈvɝː.t̬ə.bəl/
UK /ɪnˌkɑːn.trəˈvɝː.t̬ə.bəl/
"incontrovertible" picture
1.

not able to be denied or disputed

:
The evidence was incontrovertible.
His argument was based on incontrovertible facts.