His refusal to attend class gatherings showed obvious elitism, which made his classmates uncomfortable.

elitism 是由 elite（精英）加上后缀 -ism（表示主义、学说）构成的名词。elite 指"精英、上层人士"，-ism 表示某种思想或行为方式。elitism 合起来指"精英主义"，即认为精英群体优于普通人的思想或行为方式。