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inverted – v. to change the position, order, or relationship of things so that they are the opposite of what they had been
curve – n. a curved line on a graph that shows how something changes or is affected by one or more conditions
pessimism – n. a feeling or belief that bad things will happen in the future
consumer – n. a person who buys goods and services
fault – n. responsibility for a problem, mistake, bad situation
