Leirmunurinn er blár.

Because Icelandic usually puts the definite article onto the end of the noun instead of writing a separate word for the.

So:

• leirmunur = clay object / ceramic object / pottery item
• leirmunurinn = the clay object

That final -inn is the definite article here.

In this sentence, -inn means the.

Icelandic has a suffixed definite article, so instead of a separate word before the noun, the article is attached to the noun itself.

Compare:

• leirmunur = a clay object / clay object
• leirmunurinn = the clay object

This is one of the first big differences English speakers notice in Icelandic.

The dictionary form is leirmunur.

The -inn part is added because the noun is definite. So when you look the word up, you would usually look for leirmunur, not leirmunurinn.

Here it is:

• masculine
• singular
• nominative

It is nominative because it is the subject of the sentence.

This matters because Icelandic adjectives have to agree with the noun in gender, number, and case.

Because blár agrees with leirmunurinn.

Since leirmunurinn is:

• masculine
• singular
• nominative

the adjective also appears in the masculine singular nominative form:

• blár

Compare the other genders:

• masculine: blár
• feminine: blá
• neuter: blátt

So the form of the color word changes depending on the noun it describes.

This is a very common question.

In Leirmunurinn er blár, the adjective is predicative: it comes after er and describes the subject.

Predicative adjectives in Icelandic usually take the strong form, even when the noun is definite. That is why you get:

• Leirmunurinn er blár. = The clay object is blue.

But when the adjective comes directly before a definite noun, you often get the weak form:

• blái leirmunurinn = the blue clay object

So:

• The clay object is blue → Leirmunurinn er blár
• the blue clay object → blái leirmunurinn

Er means is.

It is the present tense singular form of the verb vera (to be).

So:

• vera = to be
• er = is

Yes. This is very normal Icelandic word order:

• Leirmunurinn = subject
• er = verb
• blár = predicate adjective

So the structure is basically:

subject + is + adjective

Very similar to English.

Not usually. Icelandic has no normal indefinite article equivalent to English a/an.

So the bare noun leirmunur can mean something like:

• a clay object
• clay object in a general sense

That means English speakers often have to get used to the fact that Icelandic marks the very clearly, but usually does not mark a/an at all.

You would usually say:

• Leirmunur er blár.

That can mean something like A clay object is blue or possibly a more general statement depending on context.

The definite version is more clearly about a specific object:

• Leirmunurinn er blár.

Leirmunur refers to an object made of clay, pottery, or ceramic material.

Depending on context, it could be translated as something like:

• clay object
• ceramic object
• pottery item
• artifact made of clay

Like many Icelandic nouns, it is a compound word. Learners should know that the overall meaning of a compound is often more useful than trying to translate each part too literally.

A rough English-style guide would be:

• LEIR-mu-nu-rin er blaur

A few helpful notes:

• ei in Leir- sounds roughly like the vowel in day, though not exactly the same.
• á in blár sounds roughly like ow in now.
• The r sound in Icelandic is usually trilled or tapped, not the typical English r.

You do not need perfect pronunciation at first; the important thing is to notice that Icelandic spelling is fairly consistent once you learn the sound system.

You would usually switch the verb and subject:

• Er leirmunurinn blár?

That means Is the clay object blue?

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

Add ekki (not):

• Leirmunurinn er ekki blár.

That means The clay object is not blue.

So a useful mini-pattern is:

• er = is
• er ekki = is not

The adjective would change to match the noun.

For blue, the basic singular nominative forms are:

• masculine: blár
• feminine: blá
• neuter: blátt

So you might see patterns like:

• Leirmunurinn er blár.
• Bókin er blá.
• Húsið er blátt.

This agreement system is one of the most important parts of Icelandic grammar.