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
Elisabeta	-	Romanian
Delaiah	di-lay-IE-ə (English)	Biblical
Nassim	nah-SEEM	Arabic
Seachnall	-	Irish
Nosson	-	Yiddish
Angelica	an-JEL-i-kə (English), ahn-JE-lee-kah (Italian)	English, Italian, Romanian, Literature