ἀσυγγνώμων
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → But for extreme illnesses, extreme remedies, applied with severe exactitude, are the best (Hippocrates, Aphorism 6)
English (LSJ)
ον, gen. ονος,
A not pardoning, merciless, D.21.100, Plu.2.59e: irreg. Sup. -έστατος Phint. ap. Stob.4.23.61.
German (Pape)
[Seite 379] ον, nicht verzeihend, unbarmherzig Dem. 21, 100; Sp.