Stiklan er stutt.

Stiklan is the subject, er is the verb, and stutt is an adjective describing the subject.

So the structure is:

• Stiklan = the noun phrase
• er = is
• stutt = short

This is a very common Icelandic sentence pattern.

Because Icelandic usually puts the definite article on the end of the noun instead of using a separate word like English the.

• stikla = a trailer / trailer
• stiklan = the trailer

So the -n here is the attached definite article.

Stikla is a feminine noun.

That matters because Icelandic adjectives have to agree with the noun they describe in:

• gender
• number
• case

That is one reason the sentence uses stutt and not another adjective form.

It is in the nominative case, because it is the subject of the sentence.

In a basic sentence like this, the thing that is something usually appears in the nominative:

• Stiklan = subject, nominative
• stutt = adjective agreeing with it

Because the adjective has to agree with stiklan, which is feminine singular nominative.

The adjective stuttur (short) changes form:

• stuttur = masculine singular
• stutt = feminine singular
• stutt = neuter singular

So with stiklan, the correct form is stutt.

Also, after er (is), Icelandic normally uses the adjective in its predicate form, and here that gives stutt.

Er is the 3rd person singular present tense of vera (to be).

So:

• ég er = I am
• þú ert = you are
• hann / hún / það er = he / she / it is

Since stiklan is singular, Icelandic uses er.

Yes. This is the normal word order for a simple statement:

• subject + verb + complement

So:

• Stiklan = subject
• er = verb
• stutt = complement/adjective

This is the direct equivalent of English The trailer is short.

Yes. Stuttur / stutt can mean short in different senses, including:

• short in length
• short in duration
• brief in a more general sense

With something like a trailer, people will usually understand it as short in duration, unless the context suggests something else.

Usually by putting the verb first:

Er stiklan stutt?

That means Is the trailer short?

This verb-first pattern is very common in Icelandic yes/no questions.

Add ekki (not):

Stiklan er ekki stutt.

That means The trailer is not short.

A rough English-friendly approximation is:

STIK-lan er stut

A few useful points:

• The stress is on the first syllable of stiklan
• er is short
• stutt has a short vowel and a final tt

Like all approximations, this is only rough; the real Icelandic sounds do not match English exactly.