send someone about his business—dismiss a person unceremoniously:
- “Well, send him about his business when he bores you, Edna,” instructed her husband as he prepared to leave.
Note: The expression does not correlate in meaning with the phrase go about one’s business—attend to one’s own affairs:
- She never reacted to his verbal abuses in our presence; she went about her business, distant and proud.
send someone on business—send a person on a business mission:
- Once in a while, these companies would send me on business to Singapore, where I would work at their Singapore branch.