The action libera in cause is a crime that a behavior intentionally or faultily makes himself into no legal competence or limit legal competence and satisfies the constitution of crime under thereof.

原因自由行为是行为人故意或过失使自己陷于无责任能力或限制责任能力状态而在此状态下充足犯罪构成要件的犯罪行为。