Monetary
Etymology
From Late Latin monetarius, "of a mint or of money," from moneta, "mint, coinage." Moneta was a title of the goddess Juno, in whose Roman temple coins were struck; her name, from monere, "to warn, advise," passed to the money made there and, much later, to our word money.
adjective · /MON-ih-tair-ee/
Relating to money itself — its supply, interest rates, and the actions of a central bank.
What it names
It is the other great economic lever: by moving interest rates, a central bank makes borrowing cheaper or dearer, nudging the whole economy to speed up or slow down.
Example
To cool inflation, the central bank tightened monetary policy by raising interest rates.
Related idea
Monetary policy works through money and rates; fiscal policy works through government taxing and spending.