Also means
sabotage
Usage Note
Torpiller literally means to attack with a torpedo, but its figurative sense — to deliberately wreck a plan, negotiation, or project — is far more common in everyday French. The agent noun is torpilleur, which also names a torpedo boat. It follows the regular -er conjugation.
Examples
"Il a torpillé les négociations au dernier moment."
Natural Translation
He torpedoed the negotiations at the last moment.

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