Controversies about the word niggardly. In the United States, there have been several controversies concerning the word niggardly, an adjective meaning stingy or miserly, because of its phonetic similarity to the racial slur nigger. Etymologically the two words are unrelated.
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MPC is the proportion of additional income that an individual consumes. For example, if a household earns one extra dollar of disposable income, and the marginal propensity to consume is 0.65, then of that dollar, the household will spend 65 cents and save 35 cents.