Ειρήνη (Greek) comes from Ancient Greek Εἰρήνη, from Ancient Greek εἰρήνη, from Ancient Greek εἴρω, from Proto-Hellenic wéřřō, from Proto-Indo-European wéryeti, from Proto-Indo-European werh₁- — to speak, say.
Ειρήνη (Greek): peace, tranquility, harmony