Learn Turkish: Bu tuvalet çok pis. - This restroom is very filthy.

In this lesson, we are learning that çok can mean "very" or "a lot." When you place it directly in front of a descriptive word (an adjective) like pis, it acts exactly like "very" in English. So çok pis simply means "very filthy."

Is pis different from the word kirli (dirty) that I learned earlier?

Yes! While both mean "dirty," pis is much stronger and translates closer to "filthy," "gross," or "disgusting." It is the perfect word to use for unsanitary things like a very bad restroom or garbage, whereas kirli is softer and used for things like clothes that just need to be washed.

Why is there no word for "is" at the end of the sentence?

In Turkish, there is no separate standalone word for "is." Instead, it is usually added as a suffix at the end of a word. However, for simple "he/she/it" statements in everyday speech, you can completely leave that suffix off. The words Bu tuvalet çok pis make a complete sentence on their own: "This restroom [is] very filthy."

Does tuvalet mean the whole room, or just the toilet itself?

It means both! Just like "restroom" or "bathroom" in American English, tuvalet is the standard, polite word used to refer to the entire room as well as the actual toilet fixture.