Det var en klog beslutning.

In Det var en klog beslutning, det means it or that, depending on context.

English often says either:

• It was a wise decision
• That was a wise decision

Danish very often uses det in this kind of sentence.

Why not den?

• den is usually used with a specific common-gender noun: den bil = that car / the car
• det is used with neuter nouns, but also very often as a general pronoun meaning it/that

Here, det is not directly standing in front of beslutning. It is the subject pronoun of the whole sentence, so det is the natural choice.

var is the past tense of være (to be).

So:

• det er en klog beslutning = it is a wise decision
• det var en klog beslutning = it was a wise decision

If you are talking about something already made or judged in the past, var is correct.

en is the indefinite article, meaning a/an.

So:

• en beslutning = a decision

Because beslutning is a common-gender noun in Danish, it takes en, not et.

That is why you get:

• en klog beslutning = a wise decision

This is about adjective agreement.

The adjective klog changes depending on the noun phrase:

• en klog beslutning = common gender singular indefinite
• et klogt valg = neuter singular indefinite
• kloge beslutninger = plural
• den kloge beslutning = definite form

Since beslutning is:

• singular
• common gender
• indefinite

the correct form is klog.

So:

• en klog beslutning ✅
• et klogt valg ✅
• en klogt beslutning ❌

In modern Danish, nouns are usually grouped into two genders:

• common gender
• neuter

beslutning is a common-gender noun, so it takes en:

• en beslutning

Older grammar traditions sometimes talk about masculine and feminine, but for modern Danish learners, it is usually best to think in terms of common gender vs. neuter.

The structure is:

• Det = subject
• var = verb
• en klog beslutning = complement

So the sentence pattern is basically:

subject + verb + complement

This is very similar to English:

• It was a wise decision

Danish main clauses normally put the finite verb in the second position, and this sentence follows that rule naturally.

Yes, often it can.

The exact English translation depends on context.

For example:

• if you are referring back to an action or choice just mentioned, English might prefer That was a wise decision
• if you are making a general statement about some situation, English might prefer It was a wise decision

Danish det can cover both kinds of meaning here.

Yes. Det var klogt means That/It was wise.

The difference is:

• Det var en klog beslutning = specifically says it was a wise decision
• Det var klogt = more general, focusing on the wisdom of the action or choice

So both are correct, but the first is more specific because it includes the noun beslutning.

The main stress is on the second syllable:

• be-SLUT-ning

A rough English-style guide is something like:

• beh-SLOOT-ning

But Danish pronunciation is softer and more reduced than English spelling suggests.

A few useful points:

• u in slut is not exactly like English oo, though that approximation can help at first
• the final -ning is usually pronounced lightly
• the first syllable be- is unstressed

If you are learning pronunciation, it is best to listen to native audio because Danish vowel quality can be hard to guess from spelling.

There actually is one: en.

In Det var en klog beslutning:

• var = was
• en = a
• klog beslutning = wise decision

So Danish works very similarly to English here:

• It was a wise decision
• Det var en klog beslutning

The article comes before the adjective and noun, just as in English.

You would use er instead of var:

• Det er en klog beslutning = It is a wise decision

So the contrast is:

• er = present
• var = past

Everything else in the sentence stays the same.

If you want to say the wise decision, the noun phrase becomes definite:

• den kloge beslutning = the wise decision

So for example:

• Det var den kloge beslutning = That/It was the wise decision

Notice two things in the definite form:

• en beslutning → den ... beslutning
• klog → kloge

That is a normal pattern in Danish definite noun phrases with adjectives.

Almost perfectly:

• Det = it/that
• var = was
• en = a
• klog = wise / clever
• beslutning = decision

So a word-for-word translation is very close to natural English.

The only small issue is det, because depending on context English may prefer either it or that. Other than that, the sentence lines up very neatly with English.