The Spanish verb 'exiliar' (to exile) comes from the Latin word 'exsilium', meaning 'exile' or 'banishment'. The Latin term first evolved into the Spanish noun 'exilio' (exile), and then the verb 'exiliar' was formed by adding the common Spanish verb suffix '-ar' to create a verb meaning 'to exile' or 'to banish'.

A simpler and more commonly encountered Spanish word from the same root is 'exilio' (exile), which is the noun form. While 'exilio' refers to the state or period of being banished, 'exiliar' is the action of forcing someone into exile.

English speakers can easily remember 'exiliar' by connecting it to the English word 'exile', which shares the same Latin root 'exsilium'. The English 'exile' can be both a noun and a verb, while Spanish separates these functions into 'exilio' (noun) and 'exiliar' (verb).