adv. voluntariamente, espontáneamente ἐ. ἰτέον ἐπὶ τοὺς Ἀθηναίους Th.8.2, cf. Plb.2.22.5, D.S.18.53, D.C.17.7, 37.20.5, ἐ. κατώλισθον εἰς ἀπόστασιν Cyr.Al.M.71.669D.