How to Pronounce Irenaeus
ai-rehn-EE-uhs
Irenaeus is pronounced ai-rehn-EE-uhs: four syllables, stress on the third.
Who was Irenaeus?
Irenaeus is not a person named in the Bible. The name is best known from Irenaeus of Lyon, an early Christian bishop and writer of the second century, so it appears on this site as a pronunciation entry rather than as a biblical figure.