Prevent
Prevent verb - To keep from happening by taking action in advance.
Setting off is an antonym for prevent.
Setting off
Both terms in one sentence
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The protagonist's best friend gets him to the hospital in time to prevent his attempted suicide, setting off these incredibly shitty superpowers.
Source: Interrupted Suicide -
Spartan Kurt-051 does this in Ghosts of Onyx, setting off a FENRIS nuke to prevent the Covenant from accessing the Shield World.
Source: Franchise / Halo -
After setting off a bomb in her husband's pocket, Jane slams into her husband's car to prevent him from getting in the driveway.
Source: Sex Is Violence
Cite this Source
Setting off and Prevent. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/prevent/setting_off
Prevent & Setting off. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/prevent/setting_off>.
Setting off or Prevent. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/prevent/setting_off.
Google Ngram Viewer shows how "prevent" and "setting off" have occurred on timeline