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Closed to debate or further discussion: undebatable facts.

un′de·bat′a·bly adv.


in an undebatable manner
References in periodicals archive ?
Although veteran Egyptian actress Sabreen has been in showbiz for as long as we can remember, thanks to her undebatably great acting skills, she was recently criticised by her more conservative fans for wearing a wig in a new role she's playing this Ramadan.
I should betake me back ten thousand pages To the world's undebatably dark ages, And getting up my medieval Latin, Seek converse common cause and brotherhood (By all that's liberal--I should, I should) With poets who could calmly take the fate Of being born at once too early and too late, And for these reasons kept from being great.
There is undebatably only one human species; one humanity.