Block
Prevent
Prevent verb - To keep from happening by taking action in advance.
Usage example: a lot of problems would have been prevented if we'd just prepared better
Block is a synonym for prevent in stop topic. You can use "Block" instead a verb "Prevent", if it concerns topics such as action, keep from happening or continuing.
Mutual synonyms
Common collocations
Both words in one sentence
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Weaksauce Weakness: Sen figures out how to block Uzu's signature "poison" move by using something that would prevent Uzu's hand from making contact with her skin, like chopsticks.
Source: Light Novel / Ben-To - Unblockable Attack - You can block all kinds of attacks to lower the damage and prevent side effects like Knockback - except grenades!
Source: Video Game / Champions Online -
This is to prevent Thursday from having a mental breakdown every time she realizes Jenny does not exist; Aornis created a mental block to prevent her from being able to recall this fact.
Source: Literature / Thursday Next
Cite this Source
Prevent and Block. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/block/prevent
Block & Prevent. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/block/prevent>.
Prevent or Block. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/block/prevent.
Google Ngram Viewer shows how "block" and "prevent" have occurred on timeline