keep aloof from (someone or something)

1. To remain emotionally or physically distant from someone or something. I've never seen the CEO before—he keeps pretty aloof from the rest of us. I don't think Holly is ready to talk about her breakup yet—she's been keeping aloof from all of us lately. The shy boy kept aloof from the rest of the party, preferring to sit by himself in front of the TV.

2. To remain detached from or uninvolved with someone or something, especially in an indifferent or supercilious manner. Khalid has always kept aloof from local politics, which he considers to be a waste of valuable time. I made a decision to keep aloof from the partygoers and layabouts in college. After all, I was there to study so I could get a good career after I graduated.