have at

phrasal verb·1 sense·particle at

Usefulness

Meanings

1

Start doing something eagerly

Why “at”? AT can show steady effort on one task. The effort stays on the same point.

The buffet is open, so have at it.
The buffet is open, so start eating eagerly.
When the box arrived, Sam had at it with scissors.
When the box arrived, Sam started opening it eagerly with scissors.

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The buffet is open, so have at it. What does it mean?

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