high muck-a-muck
/ˈmʌkəmʌk/(亦作 high muckety-muck /ˈmʌkɪtɪ-/)
noun
- N. Amer. Informal a person in a position of authority, especially one who is overbearing or conceited〈北美, 非正式〉（尤指傲慢自负的）大人物, 大亨。
词源
mid 19th cent.: perhaps from Chinook hiyu 'plenty' + muckamuck 'food', from Nootka hayo 'ten' + ma·ho·maq- 'choice wheatmeal', with high substituted for hiyu.