This is the 1518th most frequent Dutch word.
boos
Angry.
Here, 'boos' is used to describe a sudden emotional response of anger due to unexpected information.
Hij werd boos toen hij het nieuws hoorde.
He became angry when he heard the news.
In this sentence, 'boos' describes an angry expression or demeanor, reflecting her emotions.
Ze keek me boos aan omdat ik te laat was.
She looked at me angrily because I was late.
Here, 'boos' is used to describe a deliberate action or behavior by children to express dissatisfaction or demand attention.