Close off and Prevent

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Close off verb - To disallow entry into (a place) by means of a physical barrier at the entry point.

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Prevent and close off are semantically related. in obstruct topic. In some cases you can use "Prevent" instead a verb "Close off".

Prevent verb - To keep from happening by taking action in advance.

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Close off and prevent are semantically related. Sometimes you can use "Close off" instead a verb "Prevent".

The Maeslant barrier are a set of doors that can close off the New Waterway (the entry to the Port of Rotterdam) in the Netherlands to prevent flooding in the case of a storm surge.

Source: Slow Doors
For example, the "water heater rocket" myth required them to close off a safety valve that would prevent the thing from launching through the building and into the sky since to a normal person, the water it drips may appear to be just draining their water bills.

Source: Failsafe Failure

Cite this Source

Prevent and Close off. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/close_off/prevent

Close off & Prevent. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/close_off/prevent>.

Prevent or Close off. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/close_off/prevent.

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