A Justiciar

1. (historical) One who administers justice, particularly:
   1. (historical) A high-ranking judicial officer of medieval England or Scotland.
   2. (historical) A justice: a high-ranking judge.
   3. (historical) A Chief Justiciar: the highest political and judicial officer of the Kingdom of England in the 12th and 13th centuries.
   4. (historical) Various equivalent medieval offices elsewhere in Europe.
2. (Christianity, theology, rare) A justiciary: a believer in the doctrine (or heresy) that adherence to religious law redeems mankind before God.

Synonyms

• (One who administers justice generally): justicer, justiciary
• (A high-ranking judicial officer of medieval England): justiciary
• (A judge of a superior court): See justice
• (The chief judicial officer of medieval England): justiciary, Chief Justiciary, Capital Justiciary; Chief Justiciar, Capital Justiciar
• (Proponent of a theological doctrine): See legalist