Likely a modern form influenced by Isaiah or Zaya, tied to Hebrew roots meaning 'God is salvation.'
Zaiah carries the bones of the great Hebrew name Isaiah — 'Yesha'yahu,' meaning 'salvation of Yahweh' or 'God is salvation' — compressed and modernized into a form that leads with the striking, uncommon letter Z. Isaiah himself is one of the towering figures of the Hebrew prophetic tradition, author of one of the Bible's most poetic and politically charged books, the prophet who spoke of swords beaten into plowshares and a suffering servant who would redeem his people. To name a child after that tradition, even obliquely, is to hand them a heavy and beautiful inheritance.
The truncation to Zaiah strips away the formal weight of Isaiah while keeping the essential sound — the '-aiah' ending that vibrates with the divine name. It joins a family of modern Z-names — Zayne, Zander, Zavion, Zara — that have climbed rapidly in popularity, drawn partly by the visual and sonic energy that Z imparts. In African American naming culture in particular, Z-names have carried associations of originality, individuality, and forward momentum.
Zaiah is rare enough to feel distinctive but recognizable enough to be pronounced correctly on first reading. It is a name that performs a kind of cultural alchemy — transforming something ancient and sacred into something contemporary and personal, without losing the spark of the original.