like nobody's business

Meaning

1. very much, very fast, very well, etc.

   I've been working like nobody's business to get it finished in time.

From the same entry

• any other business
• be in business
• be the business
• business as usual
• business is business
• get down to business
• go about your business
• have no business doing
• not be in the business of doing
• out of business
• mean business
• mind your own business