take it upon to

take it upon yourself/itself to do something

also take something upon yourself/itself

to accept a responsibility without being asked to He took it upon himself to personally thank each person who came to the memorial service. The Transit Authority has taken it upon itself to be the spokesman for its riders. Is there a reason why some countries should take upon themselves the role of international policeman?

Common Names:

Name	Pronounced	Usage
Kaarle	KAH:R-le	Finnish
Randal	RAN-dəl	English
Silvestra	-	Italian, Slovene
Anicetus	-	Ancient Greek (Latinized)
Youssef	-	Arabic
Nik	-	English, Greek, Slovene