θελήμων
From LSJ
ἐάν μή διδάξητε περί ἀρετὴς τούς τό ἀργύριον κλέψαντας, οὐ ταξόμεθα οἱ ὁπλῖται → if you don't teach those who have stolen money a lesson on moral virtue, we, the hoplites, will not line up
English (LSJ)
ον, gen. ονος,
A voluntary, εἰρεσίη A.R.2.557.
German (Pape)
[Seite 1192] ον, freiwillig, Ap. Rh. 2, 557. 4, 1657.