Isilian is a more utilitarian language. It has relatively little synonyms and allows short sentences to get a point across, making much use of diphthongs which appeared in the language over time as words evolved. While Isilian is the primary spoken language in Isilia, most Isilians speak Halsand and Othenian as well (a very small number even speaks Lacasin). This is in part due to the frequent trade with the Lacasin companies as well as visits from Othenians.