"Variant of Isaiah"
The name Izaias is commonly a male name from the "Hebrew" origin.
Izaias is a variant of Isaiah, the English form of the name of the biblical prophet (Hebrew Yeshayahu). It corresponds to the Spanish and Portuguese rendering Isaias, written with z in place of s, a spelling recorded in Brazil and in Spanish-speaking communities. The name therefore comes into English use as a transferred Iberian spelling of an older name rather than as a modern coinage.
Isaiah means "God is generous. God is my helper.".
The pronunciation of Izaias is ih-ZAY-us.