Is Undisputably A Word?

Is Undisputably A Word? In a undisputable manner; undeniably. What does Undisputably mean? : incapable of being questioned or disputed : indisputable undisputable proof/evidence. Is it underrepresented or under represented? Present in inadequate numbers or amounts; insufficiently represented. A minority group that was underrepresented in the government. Simple past tense and past participle of underrepresent.