Banken kan tilbageføre den uautoriserede betaling.

Because Danish usually marks the definite form of a noun by adding an ending to the noun itself.

• bank = bank
• banken = the bank

So instead of putting a separate word like the in front, Danish often attaches definiteness to the noun.

This happens very often in Danish:

• bil → bilen = the car
• bog → bogen = the book

Here, Banken means the bank.

This is because Danish usually uses double definiteness when a noun is definite and has an adjective before it.

So:

• betalingen = the payment
• but with an adjective: den uautoriserede betaling = the unauthorized payment

You normally need:

1. a definite article/determiner like den
2. the adjective in definite form
3. the noun in its basic indefinite-looking form

So Danish prefers:

• den store bil = the big car not usually:
• store bilen

The same pattern is used here:

• den uautoriserede betaling

Because betaling is a common-gender noun in Danish.

Danish has two grammatical genders:

• common gender
• neuter

For definite singular phrases with adjectives:

• den is used with common gender
• det is used with neuter

Since it is:

• en betaling = a payment

the definite phrase becomes:

• den uautoriserede betaling

If it were a neuter noun, you would use det instead.

Because adjectives usually take -e in a definite phrase.

Compare:

• en uautoriseret betaling = an unauthorized payment
• den uautoriserede betaling = the unauthorized payment

In the indefinite singular, the adjective here is uautoriseret. In the definite form, it becomes uautoriserede.

This -e ending is very common in Danish when:

• the noun phrase is definite
• or plural
• or after words like den, det, de

Yes. It comes from the verb autorisere = to authorize.

The word is built like this:

• autorisere = authorize
• autoriseret = authorized
• uautoriseret = unauthorized

The prefix u- often works like English un-.

So:

• autoriseret = authorized
• uautoriseret = unauthorized

In the sentence, the adjective is in the definite form:

• uautoriserede

Because Danish main clauses usually follow the V2 rule, which means the finite verb goes in the second position.

Here the sentence is:

• Banken = first element
• kan = finite verb, second position
• tilbageføre den uautoriserede betaling = the rest

So the structure is normal Danish word order for a statement:

• Banken kan tilbageføre den uautoriserede betaling.

This is similar to many other Danish sentences:

• Peter kommer i morgen.
• Jeg forstår det.

If you start with something else, the verb still usually stays in second position:

• I morgen kan banken tilbageføre den uautoriserede betaling.

Because kan is a modal verb, and after a modal verb, the main verb normally appears in the infinitive.

So here:

• kan = can
• tilbageføre = infinitive verb, to reverse / to return / to refund back

This is the same pattern as in English:

• The bank can reverse the payment.

And also the same kind of pattern in Danish:

• Jeg kan hjælpe. = I can help.
• Hun kan komme. = She can come.

Yes, it is written as one word.

It is made up of:

• tilbage = back
• føre = lead / carry / bring

So the literal sense is something like lead back or bring back.

In banking or formal contexts, tilbageføre is often used for:

• reversing a transaction
• returning money
• putting something back to its previous state

So it is a very natural verb in this kind of sentence.

Because after a modal verb like kan, Danish normally uses the infinitive without at.

So:

• kan tilbageføre not:
• kan at tilbageføre

This is similar to English:

• can reverse not:
• can to reverse

Other Danish modal verbs work the same way:

• skal betale = must pay
• vil komme = will come
• må gå = may/must go

Several things show that it is singular:

• den is singular
• the noun is betaling, not a plural form
• the whole phrase refers to one specific payment

Plural would look different, for example:

• de uautoriserede betalinger = the unauthorized payments

So in your sentence, it is clearly one specific payment.

Not always. Kan often means can, but depending on context it can express:

• ability
• possibility
• permission
• practical capability

In this sentence, kan probably means something like:

• is able to
• can
• has the possibility to

So the exact English wording depends on context. In a banking context, it may suggest that the bank is able or allowed to reverse the payment.

In a yes/no question, the verb usually comes before the subject.

Statement:

• Banken kan tilbageføre den uautoriserede betaling.

Question:

• Kan banken tilbageføre den uautoriserede betaling?

So Danish forms many yes/no questions simply by changing the word order.

It can be tricky because it is a long formal word.

A rough learner-friendly guide is:

• u- like oo
• auto- roughly like ow-to
• ri- short and light
• se-re-de with reduced final syllables in natural speech

A very rough approximation might be:

• oo-ow-to-ri-SEH-re-the

But real Danish pronunciation is softer and less fully pronounced than English spelling suggests. In everyday speech, some syllables sound reduced.

The most useful strategy is:

1. learn the stressed part first
2. listen to native audio
3. copy the rhythm rather than trying to pronounce every written letter very clearly

A rough approximation is something like:

• TIL-bye-feu-re

But that is only an English-friendly hint. In real Danish:

• tilbage has a softer, more reduced pronunciation than the spelling suggests
• føre contains the Danish ø, which does not exist in English

A better way to think of it:

• say tilbage as one smooth unit
• then føre with a rounded front vowel

If pronunciation is your goal, audio is especially important for this word, because the written form does not tell an English speaker enough.

Yes, but that would mean an unauthorized payment, not the unauthorized payment.

Compare:

• en uautoriseret betaling = indefinite, one unauthorized payment
• den uautoriserede betaling = definite, the unauthorized payment

So the sentence you were given refers to a specific payment that has already been identified in the context.

Yes, it sounds fairly formal and professional, especially because of words like:

• uautoriserede
• tilbageføre

That makes sense in a banking or legal context.

In more everyday language, people might choose simpler wording depending on the situation, but this sentence is very natural for customer service, banking, or official communication.