Focus on the pronunciation of underperform
English definition of “underperform”
/ˌʌndəpəˈfɔːm/ verb [I or T]
› to operate in a less successful way than other things of the same type: The company has underperformed for a long time.
› FINANCE to make less profit than other investments of the same type: The company's shares have underperformed the market by 35%. underperformance noun [U] › The Bank's shares should improve their recent 20% underperformance against the rest of the banking sector.