IPA: /ˌʌndɪˈspjuːtəbl/
KK: /ʌnˈdɪspjʊtəbl/
Something that cannot be argued against or doubted; it is certain and accepted as true.
The evidence presented in court was undisputable and led to a quick verdict.
Undisputable → It is formed from "un-" (meaning not), "disputare" (from Latin, meaning to argue or debate), and the suffix "-able" (meaning capable of). The word "undisputable" means not capable of being argued against or debated, indicating something that is accepted as true without question.
Think of something that is 'not' ('un-') able to be 'argued' ('disputare') against — that's why undisputable means it cannot be disputed.