What is the Greek word for winner?

There isn't one single perfect Greek word for "winner," as the best translation depends on the context. However, some possibilities include:

* Νικητής (nikētēs): This is probably the closest and most common translation. It refers to someone who has won a victory, often in a contest or battle.

* Θριαμβευτής (thriambeutēs): This implies a triumphant winner, someone who has won a glorious and celebrated victory.

* Κερδιστής (kerdistēs): This means "winner" in a more general sense, someone who has gained something through winning, like a game or a bet.

The best choice will depend on the specific situation and the nuance you want to convey.