This is the 5788th most frequent Polish word.
zachowaniu
"Zachowaniu" means "behavior" or "conduct" in English.
Here, 'zachowaniu' is used in the dative case to talk about the behavior of her, indicating the entity exhibiting the behavior.
Jej zachowaniu brakuje szacunku dla innych.
Her behavior lacks respect for others.
In this sentence, 'zachowaniu' is in the instrumental case associated with the changes occurring within the behavior discussed.
Obserwowałem, jak dziwne zmiany zachowaniu wystąpiły po rozmowie.
I observed how strange changes in behavior occurred after the conversation.
The term 'zachowaniu' is here utilized in the prepositional case as it serves to show the impact directed towards their behavior.