Definitions for undeniably
Random House Webster's College Dictionary
un•de•ni•a•bleˌʌn dɪˈnaɪ ə bəl(adj.)
incapable of being denied or disputed; incontestable.
Category: Common Vocabulary
not open to refusal.
unquestioned as to quality or merit; indisputably good:
Origin of undeniable:
to an undeniable degree or in an undeniable manner
"she is undeniably the most gifted student in the class"
In an undeniable manner, or to an undeniable extent.
in an undeniable manner