incontestable
indisputable
in-
not
+
contestable
able to be disputed
Incontestable means indisputable and can be broken down into in-0 (not0) + contestable1 (able to be disputed1).
adjective
- indisputableUndeniable or unquestionable; not able to be disputed.La evidencia es incontestable. // The evidence is indisputable.