incontrovertible
US /ɪnˌkɑːn.trəˈvɝː.t̬ə.bəl/
UK /ɪnˌkɑːn.trəˈvɝː.t̬ə.bəl/

1.
incontestable, irréfutable
not able to be denied or disputed
:
•
The evidence was incontrovertible.
La preuve était incontestable.
•
His argument was based on incontrovertible facts.
Son argument était basé sur des faits incontestables.