prey upon
Advanced (C1)neutral
to use someone's weakness to hurt them or get something from them
"Fraudsters often prey upon elderly people who live alone."
Hear it in context

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who then started to prey upon their victims.

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angels of death, ready to prey upon xeno scum.

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themselves with plenty of selfish consumers to Prey Upon

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Wolves and bears occasionally prey upon each other during scarcity.

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of psychopathic traits kind of choose who to who to prey upon essentially.