causa causans 'real, or the effect of, damage'. The concept is a legal one based on common sense. See CAUSATION.

• administrator
• administrator-in-law
• Admiralty Court
• admissibility
• admission
• Adopted Children's Register
• adoption
• ADR
• adultery
• ad valorem
• advance
• advance corporation tax
• advance directive
• advance freight
• advancement
• advisement
• Advisory Conciliation and Arbitration Service (ACAS)
• advisory opinion
• ad vitam aut culpam
• advocate
• advocate depute
• Advocate-General
• Advocate General for Scotland
• aemulationem vicini
• aequitas