be a law unto (one)self

To do whatever one desires and/or ignore rules and regulations. If you need to delegate, I wouldn't ask Gina—she is a law unto herself, and it's hard to persuade her to do anything she's not interested in. How many times has Jason been arrested now? Geez, he sure is a law unto himself!

Common Names:

Name	Pronounced	Usage
Tero	TE-ro	Finnish
AngÉLica	ahn-GE-lee-kah (Spanish)	Spanish, Portuguese
Janele	jə-NEL	English (Rare)
Albina	ahl-BEE-nah (Russian, Italian, Polish)	Russian, Ukrainian, Italian, Portuguese, Spanish, Slovene, Polish, German, Lithuanian, Ancient Roman
SÉArlas	SHAHR-las	Irish
AnaÏS	a-na-EES (French)	Occitan, Catalan, French