It was remarkable that Raskolnikov had hardly any friends at the university; he kept aloof from everyone, went to see no one, and did not welcome anyone who came to see him, and indeed everyone soon gave him up.
At last the news came (Dounia had indeed noticed signs of alarm and uneasiness in the preceding letters) that he held aloof from everyone, that his fellow prisoners did not like him, that he kept silent for days at a time and was becoming very pale.
There are no more uses of "aloof" in the book.
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People who don’t know her, think she is aloof from the rest of the team, but she is just focused on the game.
She focuses on her work and is aloof from office politics.