Pronunciation: /fɔɪld/
verb to prevent from succeeding; to frustrate or thwart
A1 The cat foiled the dog's attempt to steal its food.
A2 She foiled the robber by setting off the alarm.
B1 The detective foiled the criminal's plan to rob the bank.
B2 The security system foiled the hacker's attempt to access sensitive information.
C1 The spy foiled the enemy's plot to overthrow the government.
C2 The superhero foiled the villain's evil scheme to destroy the city.
formal The plan was foiled by unexpected circumstances.
informal Our attempt to sneak out was foiled by mom catching us.
slang The heist got foiled by the cops showing up.
figurative Her hopes of winning the competition were foiled by a last-minute injury.
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