Efficacy
/ɪˈfɪkəsi/
Definitions
- (n.) The ability of a law, regulation, or legal remedy to produce the desired result or effect in practice.
The efficacy of the new environmental statute was tested in court to determine if it effectively reduced pollution.
- (n.) Effectiveness of evidence or arguments in achieving a legal outcome.
The efficacy of the defense’s evidence convinced the jury to acquit.
Related terms
See also
Commentary
In legal drafting, 'efficacy' often relates to the practical impact and enforceability of legal norms rather than their mere existence on the statute books.
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.