Learn Icelandic: Hvar er lögheimilið þitt? - Where is your legal residence?

In Icelandic, when you place a possessive word like þitt after a noun, the noun almost always takes the definite article (the ending that means "the"). You are literally saying "the legal residence your". While you could say þitt lögheimili without the article, that word order is much less common in everyday speech and sounds quite formal or emphatic.

How is the word lögheimilið built?

It is a compound word made of lög (law) and heimili (home or residence), capped off with the neuter definite article -ið. A lögheimili is your registered legal domicile. This is a very common term because your registered address determines your taxes, voting rights, and local services in Iceland.

Why do we use þitt here instead of þinn or þín?

The word for "your" must match the gender, number, and case of the noun it describes. Since the base noun heimili is a neuter word in the singular, and it is in the nominative case as the subject of the sentence, you must use the neuter singular nominative form þitt.

Could I use Hvert instead of Hvar in this sentence?