Questions & Answers about Kjóllinn er alltof langur.
How is the word alltof built?
Alltof is an adverb of degree meaning "way too" or "far too." It is a combination of allt (all) and of (too). In Icelandic, you can stick these words together to heavily emphasize an adjective like langur.
What if the dress was just "too long" rather than "way too long"?
You would simply drop the first part of the adverb and use the word of on its own. So, "too long" is just of langur.
Why does the adjective langur have an -ur ending here?
Adjectives describe nouns, so they have to match the noun's gender. The word for dress, kjóll, is a masculine noun. Because it is the subject of the sentence, the adjective takes the standard masculine singular ending -ur, becoming langur.
Where is the word for "the" in "the dress"?
Icelandic attaches "the" directly to the end of the noun. The base word for a dress is kjóll. Because it is a masculine noun, we add the definite ending -inn to the end, giving us kjóllinn (the dress).