πειρατέον
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.
English (LSJ)
A one must attempt, c. inf., Pl.R. 453d, Arist. EN1166b28, etc.; π. εἶναι Isoc.5.58 :—also πειρ-τέα, Pl.Lg. 770b.
