Focus on the pronunciation of snowball
English definition of “snowball”
/ˈsnəʊbɔːl/ verb [I]
› to quickly grow bigger or more important: The problems were apparent in April, and the situation seems to have snowballed from there. When the market began to tumble, it caused her losses to snowball. What began in the US as the 'dress-down Friday' trend has snowballed.