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chốt đơn
literally: to lock the order
To close the order, to hit buy
Built from
- chốt to bolt shut, to settle finally
- đơn an order, a form
Bolting the order shut. It comes straight from livestream selling, where the seller closes each sale out loud, and it has escaped into ordinary speech for settling anything at all.
How people actually use it
Đẹp quá, chốt đơn liền!
So good, I'm buying it right now!
Who can you say it to? Fine with anyone your age.