unarguable

US /ʌnˈɑːrɡ.ju.ə.bəl/
UK /ʌnˈɑːrɡ.ju.ə.bəl/
"unarguable" picture
1.

not able to be disputed or questioned; undeniable.

:
It's an unarguable fact that the Earth revolves around the Sun.
Her talent is unarguable; she's truly gifted.