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undeniable

 
/ˌʌn·dɪˈnɑɪ·ə·bəl/ adj [not gradable]

Definition

so obviously true that it cannot be doubted: It is an undeniable fact that ice is cold. undeniably
 
/ˌʌn·dɪˈnɑɪ·ə·bli/ adv [not gradable]
She is undeniably brilliant.
(Definition of undeniable adj from the Cambridge Academic Content Dictionary © Cambridge University Press)

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