Explanation:

- Default: This typically refers to failure to fulfill a financial obligation, like missing a debt payment. Not relevant here.

- Devaluation: The reduction in the value of a currency with respect to other monetary units. This concept is linked to currency exchange and not directly to government expenditure exceeding revenue.

- Deficit Financing: This is the practice where a government spends more money than it receives in revenue. This excess finance is often covered through borrowing.

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- Morbidity: Refers to the condition of being diseased or the incidence of illness within a population. This is unrelated to government finance.

In summary, Deficit Financing is indeed the situation where government expenditure surpasses its revenue.