background
noun
1 the house stands against a background of sheltering trees:
surrounding(s), backdrop, backcloth, framework;
scene.
3 the airport may be seen in the background:
in the distance, on the horizon.
▷antonyms foreground, front.
4 after that evening, she remained in the background:
behind the scenes, out of the public eye, out of the spotlight, out of the limelight, backstage;
inconspicuous, unobtrusive, unnoticed.
5 a mix of students from many different backgrounds:
social circumstances, family circumstances;
environment, class, culture, tradition;
upbringing, rearing.