Meaning of “aloof” - Learner’s Dictionary

aloof

adjective uk us /əˈluːf/
NOT FRIENDLY

not friendly, especially because you think you are better than other people:

He seems arrogant and aloof.
NOT INVOLVED

not involved in something:

He tried to remain aloof from family arguments.

(Definition of “aloof” from the Cambridge Learner’s Dictionary © Cambridge University Press)