Doors slam shut.
Meaning: This means that the doors are closing with a lot of force. It's like saying, The doors are being closed very hard.
Choice of Words: Doors are the movable panels that open and close to allow entry and exit from a building or room. Slam is a verb that means to close something with force. Shut is an adjective that describes something that is closed. Together, they describe the doors closing with force.
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Related Expressions