Sentence:  Another patient , a paranoid woman , for many months infuriated not only me but the ward personnel and her fellow patients by arrogantly <WSD>behaving</WSD> as though she owned the whole building , as though she were the only person in it whose needs were to be met . 
Meaning of the word marked with <WSD> tags:  behave in a certain manner; show a certain behavior; conduct or comport oneself