con ‧ sum ‧ er ‧ ism /kənˈsjuːmərɪz ə m $ -ˈsuː-/ BrE AmE noun [uncountable]
1 . the belief that it is good to buy and use a lot of goods and services – often used to show disapproval:
the growth of consumerism
2 . actions to protect people from unfair prices, advertising that is not true etc
—consumerist adjective