Reipið er of stutt fyrir svona leik, en hún heldur samt í reipið og brosir.

Because Icelandic usually attaches the definite article to the end of the noun.

• reipi = rope
• reipið = the rope

The ending -ið is the definite article here. Reipi is a neuter noun, and reipið is its definite singular form.

Also, in this sentence, reipið appears twice. That is normal: for many neuter nouns, the nominative and accusative singular look the same, so reipið can mean both the rope as the subject and the rope as the object.

Because adjectives in Icelandic must agree with the noun they describe in gender, number, and case.

Here the noun is reipið, which is:

• neuter
• singular
• nominative

So the adjective must also be in the neuter singular nominative form:

• stuttur = masculine
• stutt = neuter here

So:

• Reipið er stutt = The rope is short

With of, it becomes too short:

• Reipið er of stutt = The rope is too short

No. Icelandic of is a completely different word.

In this sentence, of means too or excessively:

• of stutt = too short
• of stór = too big
• of mikið = too much

So it is not related to the English preposition of.

fyrir svona leik means for a game like this or for such a game.

A few things are happening here:

• fyrir = for
• svona = such / like this / this kind of
• leik = a form of leikur = game

As for a: Icelandic does not have an indefinite article like English a/an. So Icelandic often just uses the noun by itself.

That means:

• svona leik = such a game / a game like this

So even though English needs a, Icelandic does not.

Because leikur is the dictionary form, but nouns often change form depending on their role in the sentence.

Here the noun comes after fyrir, so it is not in the basic nominative form. The form used is leik.

For this noun:

• leikur = nominative singular
• leik = object form used here

A useful detail: with leikur, the accusative and dative singular are both leik, so the form itself does not tell you much by itself—you mainly learn it as part of the phrase.

svona is a very common word meaning something like:

• like this
• such
• this kind of

In svona leik, it means this kind of game or a game like this.

It is often used very naturally in everyday Icelandic to describe type or manner:

• svona fólk = people like this / such people
• svona veður = weather like this
• svona leikur = a game like this

Because halda í is a set expression meaning hold on to or keep hold of.

So here:

• hún heldur í reipið = she is holding on to the rope

This is important because Icelandic verbs often combine with prepositions in ways that you simply have to learn as a unit.

Compare:

• halda can mean keep, hold, or continue
• halda í specifically means hold on to

So it is best to learn halda í as one expression.

Not in this sentence.

Here, heldur is the present tense, 3rd person singular form of halda:

• ég held
• þú heldur
• hún heldur

So here it means she holds.

You may also see heldur in other contexts with different meanings, for example in comparisons or expressions like ekki ... heldur. But here it is clearly the verb because it goes with hún and the phrase í reipið.

samt means still, all the same, or nevertheless.

So:

• hún heldur samt í reipið = she still holds on to the rope
• or she holds on to the rope anyway

Its position is natural Icelandic word order. In a main clause, Icelandic usually puts the finite verb early, and short adverbs like samt often come right after it:

• hún heldur samt ...

That placement sounds very natural.

Repeating the noun is completely natural in Icelandic, especially when the noun is central to the sentence.

So:

• ... heldur samt í reipið ... = natural
• ... heldur samt í það ... could also work if the reference is clear

Using the full noun can sound clearer and more concrete. Icelandic does not avoid repetition as much as English sometimes does.

brosir is the present tense, 3rd person singular of brosa = to smile.

So:

• hún brosir = she smiles / she is smiling

Like English simple present in narration, Icelandic present tense can often cover both:

• she smiles
• she is smiling

depending on context.

Because the same subject is understood for both verbs.

In:

• hún heldur samt í reipið og brosir

the subject hún applies to both:

• hún heldur
• (hún) brosir

English works the same way:

• She holds on to the rope and smiles

You can repeat the subject for emphasis, but normally you do not need to.

It has two main clauses joined by en = but:

1. Reipið er of stutt fyrir svona leik

   • Reipið = subject
   • er = is
   • of stutt = too short
   • fyrir svona leik = for a game like this

2. en hún heldur samt í reipið og brosir

   • en = but
   • hún = she
   • heldur = holds
   • samt = still / nevertheless
   • í reipið = on to the rope
   • og brosir = and smiles

So the sentence is basically:

• The rope is too short for a game like this, but she still holds on to the rope and smiles.