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Ready and able to function or begin an activity, pursuit, or task again, as after a period of dysfunction, disability, or disrepair. The engine had to be completely overhauled, but we're in business now! Her storefront grew stagnant because of the building's poor condition, but she's in business now that the place is all fixed up!
operating; equipped or ready to operate. We're in business now, and things are running smoothly. Now it works. Now we're in business.
If you say that you are in business, you mean that you can start doing something because you have got everything ready for it. It plugs in here, right? Okay, we're in business. Let's see how it works, guys. It'll be all right, Tony. With your man keeping tabs on her, we'll be in business the moment she makes a move.
in businessable to begin operations. informal
mod. operating; equipped to operate. Now it works. Now we’re in business.