Leave the door open
When you "leave the door open" to an idea, you acknowledge that it's still possible.
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DefinitionYour turn
The ending of ‘Downton Abbey’ left the door open to a sequel or a spinoff series. When you leave the door open to an idea, you acknowledge that it’s still possible. If you ask for a raise at work and your boss says, “Not right now, but maybe someday soon,” your boss would have left the door open to the possibility of giving you a raise. Let’s hope!