бесспорно
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
Russian > Greek
ἀδηρίτως, ἀναμφιλόγως, ἀναμφιβόλως, ἀναμφισβητήτως, σαφῶς, σαφέως