Consumptionism 

An ideology, or system of beliefs, that prioritizes consumption and spending above all else. Most Americans practice this, while their credit lender encourage it.

Jane: Where did Stacy get those new shoes? And the purse? I thought she said her credit card was maxed out.
Jessica: Oh, it is. But she's consumptionist--you know, she believes in consumptionism...so she opened another credit card. I think that's her tenth one now.

Consumptionism by Visari01 August 12, 2014

consumptionious 

Term used in lieu of 'efficiency' by stupid Dagenham Motors (Ford) car salesman, who don't know how to wield their language let alone their job.

Salesman: "the 1.6TD is more fuel consumptionious than the 1.8TD, innit."
Normal Person: "Do you mean the 1.6 is more fuel efficient?"
Salesman: "yeah, dats it."
Jan 2011, Essex

consumptionious by chopsuk January 12, 2011