Open season on

A time when everyone is criticizing someone, unrestricted hunting of an animal.It is open season on our boss and everyone feels free to... Read more →

Open Pandora’s box

To uncover more problems or issues than you expected or wanted.The investigation of the company was like opening Pandora's box. Many other... Read more →

Open one`s heart to (someone)

To talk about one`s feelings honestly, to confide in someone.I opened my heart to my friend when I saw her at the restaurant last night.

Open for business

A shop or restaurant or business that is open and ready to do business.The small shop is open for business after a long holiday.

Open fire on (someone)

To start shooting at someone, to start asking questions or criticizing someone.The police opened fire on the man with the gun.

An open book

Someone or something that is easy to understand.My friend is an open book. He is very easy to understand.

An open-and-shut case

Something (often a legal matter) that is simple and clear.It was an open-and-shut case when the judge decided the case of the stolen computer.

Open and aboveboard

To be honest, to be visible to the public.The company is open and aboveboard and they run their business very honestly.

Open a meeting

To begin a meeting.They opened the meeting by welcoming the new guests.

Open a conversation

To start a conversation.I tried to open a conversation with the man in the bus.