Definition of a law unto oneself
- I've warned him that he can't keep behaving this way, but he seems to think that he's a law unto himself.
: a binding custom or practice of a community : a rule of conduct or action prescribed (see prescribe 1a) or formally recognized as binding or enforced by a controlling authority
: the whole body of such customs, practices, or rules
: common law
: to sue or prosecute at law
used as a function word to indicate reference or concern
: a person's self : one's own self
: one's normal, healthy, or sane condition or self
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