ἀναμφισβητήτως
From LSJ
ὕπνος δεινὸν ἀνθρώποις κακόν → sleep is a terrible evil for humans (Menander, Sententiae monostichoi 1.523)
French (Bailly abrégé)
adv.
sans contestation.
Étymologie: ἀναμφισβήτητος.
Russian (Dvoretsky)
ἀναμφισβητήτως: неоспоримо, бесспорно Lys., Xen., Plat., Dem.
English (Woodhouse)
(see also: ἀναμφισβήτητος) indisputably, unquestionably, beyond dispute, without dispute, without doubt