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
Irenka	ee-REN-kah (Polish)	Polish, Czech
Laila (2)	LIE-lah	Danish, Norwegian, Swedish, Finnish
Halli	-	Ancient Scandinavian
Aubert	['ɔ:bət]
Hudde	-	Medieval English
Vardan	-	Armenian