aloof
adj.adj. behaving in a way that shows you do not want to be close to other people. You might act this way if you feel you are better than them or if you are very busy.
adj. behaving in a cold, distant, or unfriendly manner; intentionally keeping a distance from others. Often implies a sense of superiority or a lack of interest in social interaction.
He was very aloof and did not want to talk to anyone.
The manager was so aloof that the new employees felt uncomfortable asking for help with their first tasks.
Despite her success in the corporate world, she remained aloof from her former colleagues, preferring the quiet of her private office to the noise of the open-plan floor.
From Middle English loof (“weather gage, windward direction”), probably from Middle Dutch (Compare Dutch loef (“the weather side of a ship”)), originally a nautical order to keep the ship's head to the wind, thus to stay clear of a lee-shore or some other quarter, hence the figurative sense of "at a distance, apart".