Home › Words › I › irenarchirenarch/ˈaɪɹɪnɑː(ɹ)k/irenarch means an officer in Ancient Greece having functions corresponding to those of a Justice of the Peace.irenarch is pronounced /ˈaɪɹɪnɑː(ɹ)k/.EtymologyFrom Latin īrēnarcha, īrēnarchēs, from Ancient Greek εἰρηνάρχης (eirēnárkhēs), from εἰρήνη (eirḗnē, “peace”) + ἀρχή (arkhḗ, “rule”).nounAn officer in Ancient Greece having functions corresponding to those of a Justice of the Peace.Definitions & examples from Wiktionary (CC BY-SA 3.0).