Questions & Answers about Bu kavganın asıl sebebi yorgunluk olabilir.
Because kavganın is the genitive form of kavga.
In this sentence, bu kavganın asıl sebebi means something like the main reason of/for this argument. Turkish often uses a genitive + possessed noun structure for this kind of relationship.
- kavga = argument, fight
- kavganın = of the argument / the argument’s
The genitive ending is -(n)ın / -(n)in / -(n)un / -(n)ün, depending on vowel harmony.
Here:
- base noun: kavga
- last vowel: a
- so the genitive ending becomes -nın
- result: kavganın
The n appears because the noun ends in a vowel.