rule the roost

意味

to be the person who makes the decisions in a group

集団の中で物事を決める立場にある.

例文

1. 1In our house, it's the cat that rules the roost; even the dog gets out of its way.
2. 2Gran ruled the roost at family dinners, and nobody argued with her seating plan.
3. 3Aisha is the youngest in the office, but she rules the roost: everyone does what she says.
4. 4Who rules the roost in your family? Who decides where you go on holiday?
5. 5When the new manager arrived, it was clear she would rule the roost; she rewrote every rota herself.

文法

形が変わるのは rule だけ：rules、ruling、ruled。the roost は変えない。