管家 (guǎn jiā): (old) butler; steward; manager; administrator; housekeeper; to manage a household

In this century-old mansion, the butler personally inspects every door and window each morning to ensure the master's safety.

Before the dinner began, the butler whispered a reminder to me that several guests tonight were important VIPs, so I needed to mind my manners.

Before leaving, the old butler placed a set of keys in my hand and said that I would be the one taking care of this house from then on.

The butler in the movie always wore a crisp black tailcoat, standing silently behind his master, ready to provide service at any moment.