Freden är viktig.

Fred is the basic dictionary form and means peace.

Freden is the definite singular form, literally the peace. In Swedish, the definite article is often added as a suffix to the noun, so:

• fred = peace
• freden = the peace

In a sentence like Freden är viktig, Swedish can use the definite form to talk about the idea of peace in a general or abstract way, similar to English Peace is important.

Because Swedish usually puts the definite article at the end of the noun instead of using a separate word before it.

So instead of English:

• the peace

Swedish says:

• freden

That -en ending already means the here.

Är is the present tense of vara, which means to be.

So:

• är = is / are / am depending on context

In this sentence:

• Freden är viktig = Peace is important / The peace is important

Swedish uses the same form är for all persons:

• jag är = I am
• du är = you are
• han är = he is
• vi är = we are

The adjective has to agree with the noun.

Fred is a common gender noun in the singular, so the adjective takes the common singular form:

• en viktig fred = an important peace
• freden är viktig = the peace is important

Compare:

• ett viktigt beslut = an important decision
  (beslut is a neuter noun, so the adjective becomes viktigt)

• viktiga frågor = important questions
  (plural gives viktiga)

So viktig is used because fred/freden is singular and common gender.

You learn it from the noun’s article in its basic form:

• en fred = a peace

If a noun takes en, it is a common gender noun.
If it takes ett, it is a neuter noun.

Since fred is an en-word, its definite form becomes freden, and the adjective form here is viktig.

Literally, it is The peace is important, because freden is definite.

But in real usage, Swedish often uses the definite form with abstract nouns when talking about a general concept. So depending on context, it can correspond naturally to English Peace is important.

This is similar to other abstract statements such as:

• Kärleken är blind = Love is blind
• Friheten är viktig = Freedom is important

So the most natural English translation may be less literal than the Swedish form.

The word order is:

• Freden = subject
• är = verb
• viktig = subject complement / adjective

So the pattern is:

• Subject + verb + adjective

This is a very common basic Swedish sentence pattern.

A simple learner-friendly approximation is:

• FREH-den

A few points:

• e in fred is a long vowel here
• the d is pronounced
• the ending -en is a separate syllable

So it sounds roughly like FREH-den, not like English freed-en.

Är is pronounced roughly like air, but with a Swedish vowel quality.

For an English speaker, air is a useful approximation, though the Swedish sound is usually shorter and cleaner than in many English accents.

Normally, no.

There are two problems there:

1. Fred without the definite form may sound less natural in this kind of abstract statement.
2. viktigt is the wrong adjective form for fred, because fred is a common gender noun, not a neuter noun.

So the correct sentence is:

• Freden är viktig

If you used the indefinite noun, the adjective would still need to match:

• Fred är viktig would have the right adjective form, but it is less natural than Freden är viktig in this kind of general statement.

Yes, but it means something more specific.

• Freden är viktig = peace / the peace is important
• Den freden är viktig = that peace is important

Adding den points to a particular peace, often in contrast with something else.

So den freden is not just a normal definite noun; it is a more specifically identified one, like that peace or that particular peace.