Definition of Foil

to stop something bad from occurring

Examples of Foil in a sentence

Fortunately, the police were able to foil the kidnapper’s plan.  

Ben was able to foil his attacker’s assault by placing a trashcan lid over his chest.  

Working together, the countries hope to foil future terrorist attacks.  

The neighborhood watch program has helped the police department foil many crimes.  

Despite his age, the elderly security guard was able to foil the robbery attempt.  

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