Judicial Activism Definition

noun
Judicial lawmaking that exceeds the proper exercise of judicial authority, especially when concerned with matters ordinarily addressed by a legislature.
American Heritage
A usually pejorative phrase implying that a judge is applying his or her own political views, rather than basing decisions on law or prior precedent.
Webster's New World Law

(law, pejorative) The act of replacing an impartial interpretation of existing law with the judge's personal feelings about what the law should be.

Wiktionary
Synonyms:
  • broad interpretation