Also means
to foil
Usage Note
Contrecarrer means to actively frustrate or block someone's plans or intentions — stronger than simply 'to oppose'. It is typically used with plans, projects, or ambitions: contrecarrer les plans de quelqu'un. The prefix contre- (against) reinforces the sense of direct opposition. It is a formal-register verb, less common in casual speech.
Examples
"Il a tout fait pour contrecarrer nos projets."
Natural Translation
He did everything to thwart our plans.

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