beef up

phrasal verb·1 sense·particle up

Meanings

1

Strengthen or reinforce

Why “up”? More of something is higher. Quantity, intensity and speed all rise.

They beefed up security at the airport.
They significantly strengthened security measures at the airport.
The school beefed up its online safety rules.
The school made its online safety rules stronger.

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They beefed up security at the airport. What does it mean?

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