This is the 13217th most frequent Turkish word.
kaybetmiştir
"Kaybetmiştir" means "has lost."
Here, 'kaybetmiştir' is used to describe losing something intangible, such as consciousness.
O, bilincini kaybetmiştir.
He has lost his consciousness.
In this case, 'kaybetmiştir' denotes the loss of a tangible object, the notebook.
Defterini kaybetmiştir.
She has lost her notebook.
Here, 'kaybetmiştir' is used to express losing a non-material concept, such as a 'victory.'