φθατέω
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)
aor. subj. φθατήσῃ, glossed φθάσῃ, Hsch.; cf. καταφθατόομαι (or rather -έομαι); also ψᾰτᾶσθαι,
A = προκαταλαμβάνειν, Id.; ψατῆσαι, = προειπεῖν, Id.