Focus on the pronunciation of fluster
English definition of “fluster”
/ˈflʌs·tər/ v [T]
› to make someone nervous or upset, esp. when the person is trying to do something: Don’t let that new tax form fluster you – it’s not as bad as it looks. flustered
/ˈflʌs·tərd/ adj › If I look flustered it’s because I’m trying to do 20 things at once.