Pronunciation: /kənˈsjuːmərɪz(ə)m/
noun
[mass noun]-
1the protection or promotion of the interests of consumers: the growth of consumerism has led to many organizations improving their service to the customer
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2often derogatory the preoccupation of society with the acquisition of consumer goods: many people are becoming increasingly conscious of the environmental impact of consumerism

Derivatives
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adjective & noun -
adjective