“+ adjective
Etymology: un- (I) + deny + -able
1. : plainly true : readily conceded : incontestable , indisputable
undeniable evidence of a witness
undeniable guilt
2. : unquestionably excellent or genuine
undeniable literary classic
applicant would have to produce undeniable references — Country Life
• un·de·ni·able·ness noun -es
• un·de·ni·ably -blē, -li adverb