Learn Turkish: Senin için endişelenmedim diye bana küstün mü? - Did you get offended at me because I didn't worry about you?

In this lesson's structure, you can take a complete, conjugated verb (like endişelenmedim, meaning I didn't worry) and add diye right after it to mean "because." It literally comes from the verb demek (to say), giving it the flavor of "Did you get offended at me thinking 'I didn't worry'?" This is a very common, informal way to express a reason in Turkish.

Why do we use Senin için (for you) instead of Senin hakkında (about you)?

In English, we usually say we worry "about" someone. In Turkish, when you are concerned for someone's well-being, you use için (for). So senin için endişelenmek translates more closely to worrying for someone's sake.

Why does the sentence use bana (to me) with küstün?

The verb küsmek (to get offended, to give someone the silent treatment) requires the dative case. While in English you get offended "at" someone, in Turkish you direct your offense "to" them, so it becomes bana küstün (you got offended at me).

How is the long word endişelenmedim broken down?