Learn German: Sie vermuten, die Fortsetzung ist nicht sehr überzeugend. - They suspect the sequel is not very convincing.

This is a subordinate clause without dass. After verbs of thinking, saying, or feeling (like vermuten), you can drop the word dass. When you do this, the subordinate clause behaves like a regular main clause, meaning the conjugated verb (ist) stays in the second position instead of being kicked to the end.

How would the sentence change if I decided to include the word dass?

If you add dass, it triggers standard subordinate clause word order, which forces the conjugated verb to the very end of the sentence. It would look like this: Sie vermuten, dass die Fortsetzung nicht sehr überzeugend ist. Both versions are grammatically correct and mean the exact same thing.

How does vermuten differ from denken or glauben?

While denken (to think) and glauben (to believe) are broad and general, vermuten specifically means to suspect, to presume, or to assume. It implies having a strong hunch or an educated guess about the sequel, even though they haven't seen it yet.

What kind of word is überzeugend and how is it formed?