ὀφείλειν
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.
Greek > English (Woodhouse Verbs Reversed)
(see also ὀφείλω): be a debtor, be compelled to, be in debt
Lexicon Thucydideum
debere, to owe, 4.19.3, 4.87.3,
PASS. 1.137.1, 2.40.4, 3.63.4, 3.81.4.