Principle of Legality

/ˈprɪnsɪpəl ʌv lɪˈɡælɪti/

Definitions

  1. (n.) A legal doctrine stating that no one can be punished under a law that was not established or made clear before the act was committed.
    The court upheld the conviction, emphasizing the principle of legality which prevents retroactive criminal laws.
  2. (n.) The requirement that laws must be clear, ascertainable, and non-retroactive to be enforceable.
    Legislation must comply with the principle of legality to ensure fairness and legal certainty.

Forms

  • principle of legality

Commentary

Often invoked in criminal law to uphold fairness, it serves as a key limitation on state power ensuring laws provide adequate notice to citizens.

This glossary is for general informational and educational purposes only. Definitions are jurisdiction-agnostic but reflect terminology and concepts primarily drawn from English and American legal traditions. Nothing herein constitutes legal advice or creates a lawyer-client relationship. Users should consult qualified counsel for advice on specific matters or jurisdictions.

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