This is the 1647th most frequent Turkish word.
yaptılar
"They did" or "They made."
The word 'yaptılar' is the third-person plural form of 'yapmak', meaning 'to make' or 'to do'. Here, it indicates that 'they' performed the action of making the cake.
Güzel bir pasta yaptılar.
They made a beautiful cake.
In this sentence, 'yaptılar' signifies the completion of work. The plural subject 'they' is implied, showing that a group performed the action.
Bahçede çok iş yaptılar.
They did a lot of work in the garden.
Here, 'yaptılar' is used to describe the action of conducting research, again involving a third-person plural subject.