Hawkish is term used to describe the viewpoint or aggressive stance regarding a specific economic action or event. Many people think that central bank is hawkish that watch against excessive inflation. Inflation happen when economy of any country is growing at fast pace, this lead to increase in cost of raw products and wages.
If everyday goods are too expensive, then it is unable for people to buy goods and services. This stops money from changing hands and slow down the economy growth. That’s why central bank doesn’t want the economy to grow at fast pace because it is not sustainable. So by being hawkish, they try to keep the economy growing at more reasonable pace. Central bank usually do this by raising the interest rates, which increase the value of currency.