This is the 760th most frequent Turkish word.
ücretsiz
Free (of charge).
The word "ücretsiz" is used as an adjective to describe the entrance being free of charge.
Bu hafta sonu müzeye giriş ücretsiz.
This weekend, entrance to the museum is free.
Here, "ücretsiz" modifies "internet hizmeti" indicating that the service is offered without charge.
Kütüphanemizde ücretsiz internet hizmeti sunulmaktadır.
In our library, free internet service is provided.
In this example, "ücretsiz" functions as an adverbial modifier in the expression "ücretsiz olarak" to indicate the manner of providing something.