open door

American  

noun

1. the policy of admitting people of all nationalities or ethnic groups to a country upon equal terms, as for immigration.

2. the policy or practice of trading with all nations on an equal basis.

3. admission or access; unrestricted opportunity.

   His experience had given him an open door to success in his field.

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open door British  

noun

1. a policy or practice by which a nation grants opportunities for trade to all other nations equally

2. free and unrestricted admission

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adjective

1. open to all; accessible

2. (in industrial relations) designating a policy of management being prepared to talk to workers in the office at any time

Other Word Forms

• open-door
  adjective

Etymology

Origin of open door

First recorded in 1520–30

Example Sentences

“We went from having a completely open door to closing it shut with 10 bolts.”

From Salon • Apr. 28, 2026

One time, he stood at the open door of a DC-3 plane to capture a case of whisky being dropped on the peak of Mount Kilimanjaro for a Canadian Club ad.

From The Wall Street Journal • Apr. 26, 2026

"The talks in Pakistan did not deliver a deal, but they did something just as important. They kept the door open. And in markets, an open door is often enough," he added.

From Barron's • Apr. 14, 2026

He said it has been an "open door" for help and reassurance.

From BBC • Feb. 19, 2026

Then they shift from Marlena to the open door with studied indifference.

From "Water for Elephants" by Sara Gruen