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.

Name	Pronounced	Usage
Hinnerk	-	Low German
Seo-Joon	su-joon	Korean
ŁUkasz	WUW-kahsh	Polish
Suman	-	Bengali, Indian, Hindi, Marathi, Telugu, Kannada, Nepali
Arda	-	Turkish
Ferenc	FE-rents	Hungarian