A mensa et thoro - From bed and board.
A vinculo matrimonii - From the bond of matrimony.
Ab extra - From outside.
Ab initio - From the beginning.
Absoluta sententia expositore non indiget - An absolute judgment needs no expositor.
Abundans cautela non nocet - Abundant caution does no harm.
Accessorium non ducit sed sequitur suum principale - An accessory does not draw, but follows its principal.
Accessorius sequitur - One who is an accessory to the crime cannot be guilty of a more serious crime than the principal offender.
Acta exteriora iudicant interiora secreta - Outward acts indicate the inward intent.
Actio non datur non damnificato - An action is not given to one who is not injured.
Actio personalis moritur cum persona - A personal action dies with the person.
Actiones legis - Law suits.
Actori incumbit onus probandi - The burden of proof lies on the plaintiff.
Actus nemini facit injuriam - The act of the law does no one wrong.
Actus non facit reum nisi mens sit rea - The act does not make one guilty unless there be a criminal intent.
Actus reus - A guilty deed or act.
Ad ea quae frequentius acciduunt jura adaptantur - The laws are adapted to those cases which occur more frequently.
Ad hoc - For this purpose.
Ad infinitum - Forever, without limit, to infinity.
Ad perpetuam rei memoriam - For a perpetual memorial of the matter.
Ad quaestionem facti non respondent judices; ad quaestionem legis non respondent juratores - The judges do not answer to a question of fact; the jury do not answer to a question of Law.
Aedificare in tuo proprio solo non licet quod alteri noceat - It is not lawful to build on one's own land what may be injurious to another.
Aequitas legem sequitur - Equity follows the law.
Aequitas nunquam contravenit legem - Equity never contradicts the law.
Alibi - At another place, elsewhere.
Alienatio rei praefertur juri accrescendi - Alienation is preferred by law rather than accumulation.
Aliunde - From elsewhere, or, from a different source
Allegans contraria non est audiendus - One making contradictory statements is not to be heard.
Allegans suam turpitudinem non est audiendus - One alleging his own infamy is not to be heard.
Allegatio contra factum non est admittenda - An allegation contrary to a deed is not to be heard.
Ambiguitas contra stipulatorem est - An ambiguity is most strongly construed against the party using it.
Ambiguitas verborum patens nulla verificatione excluditur - A patent ambiguity is never helped by averment.
Amicus curiae - A friend of the Court.
Angliae jura in omni casu libertati dant favorem - The laws of England are favorable in every case to liberty.
Animo furandi - With an intention of stealing.
Animo testandi - With an intention of making a will.
Annus luctus - The year of mourning.
Ante - Before.
Aqua currit et debet currere, ut currere solebat - Water runs and ought to run.
Arbitrium est judicium - An award is a judgment.
Arbor dum crescit; lignum cum crescere nescit - A tree while it grows, wood when it cannot grow.
Argumentum ab auctoritate fortissimum est in lege - An argument drawn from authority is the strongest in law.
Argumentum ab impossibilii plurimum valet in lege - An argument from impossibility is very strong in law.
Argumentum ad hominem - An argument directed a the person.
Argumentum ad ignoratiam - An argument based upon ignorance (i.e. of one's adversary).
Arma in armatos sumere jura sinunt - The laws permit the taking up of arms against the armed.
Assentio mentium - The meeting of minds, i.e. mutual assent.
Assignatus utitur jure auctoris - An assignee is clothed with rights of his assignor.
Audi alteram partem - Hear the other side.
Aula regis - The King's Court.