If you upset the ~, you do something which causes a plan, system, or arrangement to go wrong.
They may also be friends of the chairman, so they are reluctant to upset the ~.
PHRASE: V inflects
If you upset the ~, you do something which causes a plan, system, or arrangement to go wrong.
They may also be friends of the chairman, so they are reluctant to upset the ~.
PHRASE: V inflects
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012