Sjórinn er rólegur í dag.

to be

Breakdown of Sjórinn er rólegur í dag.

• í dag: today
• rólegur: calm
• sjórinn: the sea

Questions & Answers about Sjórinn er rólegur í dag.

Why does sjór become sjórinn here?

Because Icelandic usually puts the definite article onto the end of the noun.

• sjór = sea
• sjórinn = the sea

So -inn here is the masculine singular definite article. This is very common in Icelandic.

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Why is it rólegur and not rólegt or róleg?

Because the adjective has to agree with the noun it describes.

Here, sjórinn is:

• masculine
• singular
• nominative

So the adjective also has to be masculine singular nominative:

• rólegur

Compare:

• masculine: rólegur
• feminine: róleg
• neuter: rólegt

Since sjór is a masculine noun, rólegur is the correct form.

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Why is the adjective after er instead of before the noun?