Too much money chasing too few goods

The term “too much money chasing too few goods” describes best inflation, or more precisely, demand-pull inflation. This disequilibrium causes the prices to increase as more money circulating tempts buyers to pay higher prices, while the quantity of goods and services remains rather small.
A longer description follows:
Inflation:

This is a general increase in the overall price level of goods and services in an economy.
Demand-Pull Inflation:
This kind of inflation results from an increase in aggregate demand (demand for goods and services in total) beyond the supply.
The Imbalance:
When there’s excess money floating around compared to the available goods, people are ready to pay more for those scarce goods and thereby drive prices up.
Example
Suppose a government sends stimulus checks, which puts more money into individuals’ pockets. If the supply of TVs doesn’t change, consumers will drive the price of TVs up as they attempt to buy them with their fresh funds.