This is the 5323rd most frequent Turkish word.
kaybettikleri
"Their losses" or "what they lost."
The word 'kaybettikleri' refers to 'the courage they lost' (third person plural, possessive, past tense), indicating something lost by the subject and a connection to the object.
Onlar, mücadelede kaybettikleri cesaretlerini yeniden kazandılar.
They regained the courage they lost in the struggle.
Here, 'kaybettikleri' indicates 'the belongings they lost' (third person plural, possessive, past tense), showing possession and past loss experienced by the subject.
Eşyalarını kaybettikleri için üzgünler.
They are upset because they lost their belongings.
In this sentence, 'kaybettikleri' refers to 'the time they lost' (third person plural, possessive, past tense), describing a lost resource belonging to the subject.