make it one's business

make it one's business

Undertake a self-appointed task, as in I'll make it my business to find out their plans. This phrase was first recorded in 1642.
See also: business, make
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • go about (one's) business
  • go about your business
  • like nobody’s business
  • like nobody's business
  • business woman
  • open for business
  • punctuality is the soul of business
  • How's business?
  • Keep your shop and your shop will keep you
  • do (one's) business