Izaak

Izaak is a Polish and Dutch form of Isaac, ultimately from Hebrew Yitzchaq, meaning “he will laugh.” The spelling retains the double a familiar from Isaac while using z and k to represent the name in its own language settings. It shares the biblical identity of Isaac, the son of Abraham and Sarah.

Laughter is woven into the Genesis account of Isaac’s birth, where the promise of a son arrives when his parents are elderly. That narrative gives the meaning a particular story rather than a general association with happiness. English readers may also recognize Izaak from the writer Izaak Walton. Families comparing Isaac, Izaak, and Izak are choosing among established forms of one name, with differences in spelling and cultural use rather than different core meanings.