law unto oneself
A person who is totally independent, especially one who ignores established rules. For example, You can't tell Marge how to punctuate; she's a law unto herself. [Second half of 1800s]
Words nearby law unto oneself
law of universal gravitation,
law of war,
law society,
law stationer,
law term,
law unto oneself,
law-abiding,
law-and-order,
law-hand,
lawbook,
lawbreaker