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make it one's business

Idioms  

  1. 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.

Example Sentences

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V. pass one's time in, employ one's time in, spend one's time in; employ oneself in, employ oneself upon; occupy oneself with, concern oneself with; make it one's business &c. n.; undertake &c.

From Project Gutenberg

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.