Dictionary entry

ἀκων

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

ἀκων (Attic contr. for ἀέκων), -ουα, -ον

(< ἀ- neg., ἅκων, willing), [in LXX: Jb 14:17, II Mac 11:12*;]

unwilling: I Co 9:17.†