der Preisträger
prizewinner
A person who has received a prize or award for a special achievement.
Die Preisträger des Filmfestivals wurden bei einer feierlichen Gala geehrt.
The prizewinners of the film festival were honored at a festive gala.

prizewinner
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prizewinner
A person who has received a prize or award for a special achievement.
Die Preisträger des Filmfestivals wurden bei einer feierlichen Gala geehrt.
The prizewinners of the film festival were honored at a festive gala.

The word is made up of 'der Preis' (prize) and 'der Träger' (bearer/carrier). So a 'Preisträger' (prizewinner) is literally a person who 'carries' or receives a prize.
Der Preisträger bedankte sich in einer kurzen Rede.
The prizewinner thanked everyone in a short speech.
'Preisträger' is a noun of the N-declension. This means it takes the ending '-n' in the genitive, dative, and accusative singular. In the plural, it ends in '-'.
Der Journalist interviewte den Preisträger.
The journalist interviewed the prizewinner.
To specify the type of prize, 'Preisträger' (prizewinner) is often used as the second part of a compound noun, for example 'Nobelpreisträger' (Nobel Prize winner) or 'Filmpreisträger' (film award winner).
Die Nobelpreisträgerin hielt eine beeindruckende Rede in Stockholm.
The Nobel Prize winner gave an impressive speech in Stockholm.
winner
'der Sieger' and 'der Preisträger' both have to do with success. 'der Sieger' wins a competition, game, fight, or election. 'der Preisträger' receives a prize or award for a special achievement. This can be after a competition, but it does not have to feel like a direct contest. The words can be confused because a winner often also receives a prize. To be precise: someone who wins is a 'Sieger'; someone who receives an award is a 'Preisträger'.

Die Preisträgerin bekam für ihren Roman eine wichtige Auszeichnung.
The prizewinner received an important award for her novel.
Nach dem letzten Lauf stand der Sieger des Turniers fest.
After the final race, the winner of the tournament was decided.