boring
The German word 'langweilig' is used to describe something that is dull or uninteresting. It can be used to describe people, situations, or things. For example, you might say 'Das Buch ist langweilig' to express that the book is boring. The word 'langweilig' is an adjective and is declined according to the gender, number, and case of the noun it modifies.
This book is boring.
The word 'langweilig' is used here to express an opinion about the book. In this context, it suggests that the book is not interesting or exciting.
I'm bored without you.
In this sentence, 'langweilig' is used to express a feeling of boredom due to the absence of someone. It's a way to express that the person's presence makes things interesting or enjoyable.
He finds math boring.
This sentence uses 'langweilig' to express an opinion about a specific subject, in this case, math. It implies that the person does not find the subject interesting or enjoyable.