/ˌɪnkɑːntrəˈvɜːrtəbli/ (formal) in a way that cannot be disagreed with or denied synonym incontestably, indisputably Her book shows incontrovertibly that he was innocent.

adverb formal uk / ɪnˌkɒn.trəˈvɜː.tə.bli / us / ɪnˌkɑːn.trəˈvɝː.t̬ə.bli / Add to word list in a way that is impossible to doubt because of being obviously true: Your assertion is incontrovertibly true. He is, incontrovertibly, a success.

"Incontrovertibly" is an adverb that means in a way that is not able to be denied or disputed. It signifies something that is undeniably true and cannot be contradicted or questioned.

Adverb [edit] incontrovertibly (comparative more incontrovertibly, superlative most incontrovertibly) In an incontrovertible manner; in a manner not capable of being denied, challenged, or disputed.