Learn Turkish: Aşırı yorgunsun, uyuman lazım. - You are excessively tired, you need to sleep.

To say you need to do an action in Turkish, we use lazım or gerek (necessary) along with a special noun form of the verb. We take uyumak, turn it into a noun by dropping the -k to get uyuma (sleeping), and add the possessive ending -n (your). So, uyuman lazım literally means "your sleeping is necessary."

Is the -n at the end of uyuman the reflexive suffix from this lesson?

Good catch, but no! While this lesson focuses on the reflexive suffix -in (or -n), the -n here is the "your" possessive suffix added to the verbal noun uyuma. Reflexive suffixes are added directly to the verb root (like yıka-n-mak), whereas this possessive -n comes after the -ma action-noun ending.

What is the root of yorgunsun?

The root is the verb yormak, which means "to tire someone out." Adding the suffix -gun turns the verb into the adjective yorgun (tired). Finally, the personal suffix -sun makes it "you are tired."

Could I say yoruldun instead of yorgunsun?