have at: to go at or deal with : ATTACK
like two boxers having at each other
have at you
(dated) An exclamation indicating that one is about to strike the person addressed, typically with a sword or other hand-held weapon.
-Dark and sinister man, have at thee. Barrie JM (1904), Peter Pan.
have at (someone or something)
1. To strike or attack someone or something.
The two boys had at each other until the teacher arrived to break up the fight.
2. To attempt or try to do something.
Now that finals are over, I need to have at cleaning up my room.
3. To do something with energy and enthusiasm.
It didn't take long for the kids to have at the cupcakes I'd set out.
If you want to paint, have at it! All the supplies are still out.
- "Have at you now!" — Hamlet
- "Have at you with a proverb [...] Have at you with another;" — Comedy of Errors
- "Have at you!" — Henry VIII
- "Have at you, then, affection's men at arms." — Love's Labour's Lost
- "Then have at you with my wit!" — Romeo and Juliet
- "since you have begun, / Have at you for a bitter jest or two." — Taming of the Shrew
- "Come, both you cogging Greeks; have at you both!" — Troilus and Cressida.