prey on

phrasal verb·1 sense·particle on

Usefulness

Meanings

1

Hunt or take advantage of something weaker

Why “on”? An action is directed onto a person, thing or weakness as its target.

Sharks prey on smaller fish.
Sharks hunt smaller fish as their prey.
Scammers prey on lonely people.
Scammers take advantage of lonely people.

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Sharks prey on smaller fish. What does it mean?

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