"Illaisha" is a unique name with a unique spelling. The pronunciation is /ɪlˈeɪʃɑː/, with the "i" pronounced as "ihl". The "ll" is pronounced as a single "l" sound, similar to the "l" in "pillow". The "ai" sound is pronounced as "ay", while the "sh" sound is pronounced as it is spelled. The final "a" sound is pronounced as "ah". The spelling of this name may seem unfamiliar to many, but it adds to the distinctiveness of the name.