αὐτοβουλήτως

From LSJ

χαῖρ', ὦ μέγ' ἀχρειόγελως ὅμιλε, ταῖς ἐπίβδαις, τῆς ἡμετέρας σοφίας κριτὴς ἄριστε πάντων → all hail, throng that laughs untimely on the day after the festival, best of all judges of our poetic skill

Source
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Full diacritics: αὐτοβουλήτως Medium diacritics: αὐτοβουλήτως Low diacritics: αυτοβουλήτως Capitals: ΑΥΤΟΒΟΥΛΗΤΩΣ
Transliteration A: autoboulḗtōs Transliteration B: autoboulētōs Transliteration C: aftovoulitos Beta Code: au)toboulh/tws

English (LSJ)

of one's own purpose, Hsch. s.v. ἐθελοντής.