Here's a breakdown of the etymology:
* הַלְלוּ (hallēlu): This is the imperative plural form of the verb "להלל" (lāhallēl), meaning "to praise".
* יָהּ (yāh): This is a shortened form of the divine name יהוה (YHWH), the Tetragrammaton, representing the name of God in Hebrew.
So, when combined, "Hallelujah" literally translates to "Praise ye Yahweh!" or "Praise the Lord!".
It's a powerful expression of praise and adoration, often used in both Jewish and Christian traditions.