Minnislykillinn er á borðinu við hliðina á kaffibollanum.

Minnislykillinn is made of:

• minni = memory
• lykill = key
• -inn = the (the suffixed definite article)

So:

• minnislykill = memory stick / USB stick
• minnislykillinn = the memory stick / the USB stick

A very common feature of Icelandic is that the article is attached to the noun instead of being a separate word like English the.

Because the sentence refers to a specific item: the USB stick, not just a USB stick.

Compare:

• minnislykill = a memory stick / USB stick
• minnislykillinn = the memory stick / the USB stick

That final -inn is the masculine singular nominative definite ending here.

In Icelandic, the definite article is usually added to the end of the noun.

So instead of saying:

• the table
• the coffee cup

Icelandic often says:

• borðið / borðinu = the table
• kaffibollinn / kaffibollanum = the coffee cup

This is one of the first big differences English speakers notice. Icelandic can use a separate article in some situations, but in ordinary sentences like this, the suffixed article is standard.

Er is the present tense of vera = to be.

So:

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

In this sentence, the subject Minnislykillinn is singular, so er means is.

This is about case after prepositions.

The preposition á can take different cases depending on meaning:

• dative for location: on, in, at somewhere
• accusative for motion toward something

Here the USB stick is already located on the table, so Icelandic uses the dative:

• á borðinu = on the table

If there were movement onto the table, you would expect accusative instead:

• setja það á borðið = put it onto the table

So:

• location → á borðinu
• motion/destination → á borðið

Borðinu is dative singular definite of borð = table.

The basic forms are:

• borð = a table
• borðið = the table (nom./acc. singular)
• borðinu = the table (dative singular)

It is dative here because á expresses location.

Við hliðina á is a fixed expression meaning:

• beside
• next to
• literally something like at the side of

It works as a multi-word prepositional phrase:

• við hliðina á kaffibollanum = beside the coffee cup / next to the coffee cup

It is best to learn við hliðina á as one chunk, because the words work together idiomatically.

In the phrase við hliðina á, the word hlið appears in the form hliðina because this expression has become a fixed pattern.

You do not need to build it from scratch every time at an early stage. The most useful thing is to memorize:

• við hliðina á + dative

Examples:

• við hliðina á húsinu = next to the house
• við hliðina á mér = next to me
• við hliðina á kaffibollanum = next to the coffee cup

So the key practical point is: after á in this expression, the following noun is typically dative.

Kaffibollanum is the dative singular definite form of kaffibolli = coffee cup / mug.

Breakdown:

• kaffi = coffee
• bolli = cup / mug
• kaffibolli = coffee cup
• kaffibollanum = the coffee cup (dative singular definite)

It is dative because it follows á inside the expression við hliðina á.

Yes. Icelandic very commonly forms compound nouns, much like German.

So:

• kaffi
  • bolli → kaffibolli
• minni
  • lykill → minnislykill

English often uses noun + noun combinations too, but Icelandic tends to write many of them as one word.

This is very normal and very productive in the language.

That -s- is a linking element often seen in compounds.

You have:

• minni = memory
• lykill = key

But the compound becomes:

• minnislykill

That -s- helps connect the two parts. English speakers often wonder whether there is a strict rule for this, but in practice it is often something you learn with the word. Many Icelandic compounds use linking sounds like this.

The structure is:

• Minnislykillinn = subject
• er = verb
• á borðinu við hliðina á kaffibollanum = location phrase

So the order is basically:

• Subject + Verb + Place

This is very natural in Icelandic for a simple statement.

Yes. Icelandic word order is somewhat flexible, especially if you want to emphasize a different part.

For example, you could move the location phrase first:

• Á borðinu við hliðina á kaffibollanum er minnislykillinn.

That sounds more like:

• On the table next to the coffee cup is the USB stick.

The original sentence is the most neutral and straightforward.

A rough English-friendly approximation is something like:

• MIN-nihs-lih-khit-lin

A few notes:

• ll in Icelandic is often not pronounced like English ll
• y is not the same as English y
• the stress is usually on the first syllable

So don’t expect the spelling to sound exactly like English. Icelandic pronunciation takes a little practice, especially with letters like ll, ð, þ, and vowels with accents.

Here is a useful overview:

• Minnislykillinn = nominative
  It is the subject of the sentence.

• á borðinu = dative
  Because á expresses location here.

• við hliðina á kaffibollanum = dative after á in this fixed expression
  So kaffibollanum is dative.

This is a very typical Icelandic pattern: the cases are strongly controlled by sentence role and prepositions.

You would remove the definite article from Minnislykillinn:

• Minnislykill er á borðinu við hliðina á kaffibollanum.

That means:

• A USB stick is on the table next to the coffee cup.

So the main contrast is:

• minnislykill = a USB stick
• minnislykillinn = the USB stick

A good learner-friendly approach is to memorize these chunks:

• X er á borðinu = X is on the table
• við hliðina á + dative = next to + noun
• á + dative for location
• á + accusative for motion onto something

And these vocabulary items:

• minnislykill = USB stick
• borð = table
• kaffibolli = coffee cup / mug

If you learn the sentence as a model, you can quickly make new ones:

• Bókin er á borðinu. = The book is on the table.
• Síminn er við hliðina á bókinni. = The phone is next to the book.
• Lyklarnir eru á borðinu við hliðina á símanum. = The keys are on the table next to the phone.