προθυμεῖσθαι

From LSJ

νόσημα γὰρ αἴσχιστον εἶναί φημι συνθέτους λόγους → for I consider false words to be the foulest sickness

Source

Greek > English (Woodhouse Verbs Reversed)

(see also προθυμέομαι): be bent on, be eager to, be eager, be keen, be set on, be zealous

Lexicon Thucydideum

studere, expetere, contendere, to aim at, desire, strive for, 4.9.2, 4.12.2, 5.16.1. 5.50.1, 5.71.1. 6.31.3, 7.70.8. 7.86.3, 8.9.1.
cum accus. with accusative 4.81.1, 5.17.1, 5.39.3, [vulgo commonly τὰς (σπονδὰς) ἐς βοιωτούς]. 6.39.2, 8.6.1, 8.90.1, [Vat. Vatican manuscript ὁολογίαν]