Tillykke, du har vundet.

Tillykke means congratulations.

Danes use it when someone has something good happen to them, for example:

• Tillykke med fødselsdagen = happy birthday / congratulations on your birthday
• Tillykke med jobbet = congratulations on the job
• Tillykke, du har vundet = congratulations, you have won

On its own, Tillykke! is a very common exclamation.

Both patterns exist.

• Tillykke on its own = Congratulations!
• Tillykke med ... = Congratulations on ...

So:

• Tillykke! = congratulations!
• Tillykke med sejren! = congratulations on the victory!
• Tillykke, du har vundet. = congratulations, you have won.

In your sentence, the second clause du har vundet explains what the congratulations are for, so med is not necessary.

The comma separates the exclamation Tillykke from the full clause du har vundet.

It works a bit like English:

• Congratulations, you’ve won.

So the comma marks a pause between:

1. the exclamation
2. the statement that follows

Du har vundet is the present perfect, literally you have won.

It is often used when the result matters now. In this sentence, the important point is that the person is now a winner.

• du har vundet = you have won
• du vandt = you won

Both can be correct in different contexts, but har vundet sounds very natural when announcing a result.

For example:

• Tillykke, du har vundet! = congratulations, you have won!
• Du vandt i går = you won yesterday

Vundet is the past participle of the verb at vinde = to win.

The forms are:

• at vinde = to win
• vinder = win / wins
• vandt = won
• vundet = won

So in du har vundet, the structure is:

• har = have
• vundet = won

Together: have won

This is normal Danish main-clause word order:

• subject
  • verb
    • other elements

So:

• du = subject
• har = finite verb
• vundet = past participle

Compare English:

• you have won

The order is very similar here.

Yes, you can, but it changes the emphasis slightly.

• Tillykke, du har vundet.
  Starts with the emotional reaction: Congratulations!
• Du har vundet, tillykke.
  Starts with the information: You have won

The first version sounds more natural as a direct announcement.

Yes, du is the normal singular you in modern Danish.

Traditional formal you is De, so formally you could say:

• Tillykke, De har vundet.

But in modern Danish, De is much less common than formal you in some other European languages. In most everyday situations, du is completely normal and appropriate.

A rough guide is ti-LYK-uh, but the exact Danish pronunciation is harder than the spelling suggests.

A few helpful points:

• the y is not like English y in yes
• kk sounds like a clear k
• the final -e is a weak vowel, something like uh

And vundet is roughly VOON-uhth or VOON-eth, though English spelling cannot show it perfectly.

If you are learning pronunciation, it is best to listen to native audio, because Danish vowels are often very different from what an English speaker expects.

Yes. Very often Danes simply say:

• Tillykke!

That is completely natural and very common.

The full sentence Tillykke, du har vundet just adds the reason explicitly.

Yes, it is completely natural.

It would fit situations like:

• a competition announcement
• a lottery message
• a game show
• a prize notification

Depending on the situation, Danes might also say things like:

• Tillykke! Du har vundet.
• Stort tillykke, du har vundet! = big congratulations, you have won!
• Du har vundet! Tillykke!

All of these are natural, but Tillykke, du har vundet is simple, correct, and idiomatic.