Here you’ll find 67 Legal terms that start with M, organized from “Magistrate” to “Mutual recognition”. Most are high-frequency legal concepts drawn from Latin, Anglo‑French, or modern statutory language, useful across jurisdictions. You can use them for drafting, case analysis, exam study, and comparative research.
Legal terms that start with M are specialized words lawyers and students use to name doctrines, roles, procedures, and remedies. Many, such as “magistrate”, preserve historical roots reflecting centuries of legal evolution across common-law and civil-law systems.
Below you’ll find the table with Term, Definition, Etymology, Jurisdiction, and Notes.
Term: The entry word as it appears in legal texts, so you can locate a precise term quickly.
Definition: A concise legal definition that explains the core meaning and typical use in practice or litigation.
Etymology: Brief origin notes showing language roots and historical development, useful for understanding nuance and precedence.
Jurisdiction: Indicates where a term is commonly used or legally recognized, so you know its geographical scope.
Notes: Practical examples, cross-references, and short usage tips to help you apply the term accurately.
Legal terms that start with M
| Term | Type | Jurisdiction | Etymology | Description |
|---|---|---|---|---|
| Malfeasance | Tort/official misconduct | US, UK, CAN | Latin mal- + facere, medieval | Intentional wrongdoing or illegal conduct by a public official or fiduciary, often grounds for civil suit or removal. |
| Malice | Mens rea element | US, UK, CAN | Old French/Latin malitia, Middle Ages | A wrongful state of mind involving ill will or reckless disregard; used in criminal law and civil torts like defamation. |
| Malice aforethought | Homicide element | US, UK, CAN | Middle English/Law French, early modern | The mental state of premeditation or intent to kill required for murder in many jurisdictions. |
| Malum in se | Criminal law concept | US, UK, civil law systems | Latin, medieval | Acts inherently wrong by nature (e.g., murder, theft) as opposed to merely prohibited by statute. |
| Malum prohibitum | Criminal law concept | US, UK, civil law systems | Latin, medieval | Acts wrong only because a statute forbids them (e.g., regulatory offenses); intent often treated differently. |
| Mandamus | Writ/remedy | US, UK, CAN | Latin “we command”, medieval | A court order directing a public official or lower court to perform a ministerial duty; extraordinary remedy. |
| Manslaughter | Criminal offense | US, UK, CAN | Old English/Medieval Latin derivatives | Unlawful killing without malice aforethought; typically divided into voluntary and involuntary forms. |
| Market manipulation | Regulatory offense | US, EU, UK | English, 20th century regulatory usage | Conduct that distorts financial markets (false trades, wash trading); regulated in securities law. |
| Marital property | Family/property law | US, UK, CAN, AUS | English legal usage, common law | Assets owned by spouses under marriage property regimes, affecting division on divorce or death. |
| Marriage | Family law status | US, UK, CAN, civil law states | Old English/Latin matrimonium, ancient | Legal recognition of a spousal relationship with rights and duties under family law. |
| Maritime lien | Admiralty security interest | International, US, UK | Latin/Old French roots, admiralty law | A claim against a vessel for services or damages, enforceable against the ship itself. |
| Maritime salvage | Admiralty remedy | International, US, UK | Latin/Old French, centuries-old practice | Compensation for rescuing ships or cargo from peril at sea; governed by maritime law. |
| Master (judicial officer) | Court officer/role | UK, CAN, AUS, some US states | Latin magister, medieval | A court-appointed official handling case management, discovery, or interlocutory matters in equity/procedure. |
| Material breach | Contract doctrine/remedy | US, UK, CAN | English legal usage, modern | A significant breach that deprives the other party of the contract’s core benefit, justifying termination or damages. |
| Materiality | Evidentiary/contract concept | US, UK, CAN | Latin materialis, modern legal use | The relevance or importance of a fact or omission to a legal decision or transaction. |
| Material witness | Criminal procedure | US, UK | English legal usage, modern | A person whose testimony is crucial to a case; courts may compel attendance or detain if necessary. |
| Mediation | ADR/process | US, UK, CAN, EU | Latin mederi “to heal”, modern ADR | A voluntary dispute-resolution process where a neutral mediator helps parties negotiate a settlement. |
| Mediator | ADR professional | US, UK, CAN | Latin mederi, modern | A neutral third party who facilitates negotiation and settlement between disputing parties. |
| Medical malpractice | Tort/professional negligence | US, UK, CAN | English legal usage, 19th–20th century | Negligent treatment by healthcare professionals causing patient harm; claims typically require breach and causation. |
| Mens rea | Criminal law element | US, UK, CAN, civil law recognition | Latin “guilty mind”, medieval | The mental state or intent required for criminal liability; contrasted with actus reus (the act). |
| Merger (corporate) | Corporate transaction | US, UK, CAN, EU | Latin mergere “to plunge”, modern | The combining of two companies into one, with legal effects on ownership and obligations. |
| Merger doctrine | Civil/probate/contract law | US, UK | Latin/English legal tradition | Legal principle where a prior right or agreement is absorbed into a later judgment or deed, ending the prior remedy. |
| Merit | Procedural/substantive standard | US, UK, CAN | Old French/Latin meritus, medieval | An assessment of the substantive strengths of a case, often used to justify judicial action “on the merits.” |
| Mitigation | Remedies/damages concept | US, UK, CAN | Latin mitigare “to soften”, modern legal use | Duty to reduce loss after a breach or tort; failure to mitigate can limit recoverable damages. |
| Mitigating circumstances | Sentencing factor | US, UK, CAN | English/Latin usage, modern | Facts that reduce blameworthiness and may lead to a lighter sentence or penalty. |
| Mistake | Contract doctrine | US, UK, CAN | Old English/Latin, common law | An erroneous belief about facts or law that can void or reform contracts if it affects consent. |
| Misrepresentation | Contract/tort concept | US, UK, CAN | Latin re- + presentare, modern legal use | A false statement of fact inducing another to enter a contract; can lead to rescission or damages. |
| Misprision | Criminal/office offense | UK, US | Old French/Latin mispris, medieval | Failure to report or concealment of a felony or offense; historically applied to public officials or subjects. |
| Misfeasance | Tort/official liability | US, UK, CAN | Latin male + facere variants, medieval | Improper performance of a lawful act leading to harm; differs from nonfeasance and malfeasance. |
| Misdemeanor | Criminal classification | US, UK (historically) | Old French/Latin, medieval | A lesser criminal offense punishable by fines or shorter imprisonment, distinguished from felonies. |
| Mortgage | Property/security instrument | US, UK, CAN | Old French mort gage, medieval | A legal arrangement where real property secures repayment of a loan; default allows foreclosure. |
| Mortgagee | Secured creditor | US, UK, CAN | Old French mort gage, medieval | The lender or party holding the mortgage; has rights to enforce security on default. |
| Mortgagor | Borrower/homeowner | US, UK, CAN | Old French mort gage, medieval | The borrower who grants a mortgage on property to secure a loan. |
| Motion | Procedural request | US, UK, CAN | Latin motio, medieval to modern | A formal request to a court asking for an order or ruling during litigation. |
| Motion in limine | Evidentiary motion | US, UK | Latin “at the threshold”, modern | A pretrial motion to exclude or admit specific evidence before it is presented to a jury. |
| Motion to dismiss | Procedural/pleading motion | US, UK, CAN | English legal usage, modern | A request to terminate a case for legal insufficiency, lack of jurisdiction, or other defects. |
| Motion for summary judgment | Procedural motion | US, UK (similar devices) | English legal usage, 20th century | A request to decide a case without trial when there is no genuine dispute of material fact. |
| Mootness | Justiciability doctrine | US, UK, CAN | Old English moot “assembly”, modern legal sense | When a court case no longer presents a live controversy, so courts typically dismiss it as non-justiciable. |
| Municipal law | Local government law | US, UK, CAN, AUS | Latin municipalis, modern | Rules and statutes enacted by cities or local governments regulating local affairs. |
| Municipality | Local government entity | US, UK, CAN, AUS | Latin municipium, modern | A city, town, or local government with legal authority to enact ordinances and manage local services. |
| Mutual assent | Contract formation | US, UK, CAN | Latin/English legal tradition | Agreement of parties to contract terms (“meeting of the minds”), essential for enforceable contracts. |
| Mutual mistake | Contract doctrine | US, UK, CAN | English legal usage, modern | When both parties share a mistaken belief about a basic fact, allowing rescission or reformation in some cases. |
| Money laundering | Criminal/financial offense | US, EU, UK, INT | English modern term, 20th century | Processing criminal proceeds to disguise their origin; heavily regulated with criminal penalties and reporting rules. |
| Money judgment | Judgment type | US, UK, CAN | English legal usage, modern | A court order requiring payment of a specified sum of money to a prevailing party. |
| Monopolization | Antitrust offense | US, EU, UK | Greek monos + Latin/political usage, 20th century | Conduct that unlawfully acquires or maintains monopoly power to exclude competition; regulated under competition law. |
| Moral turpitude | Immigration/ethics concept | US, UK, CAN | Latin/Old French roots, 19th century usage | Conduct that shocks community standards of morality; affects immigration, professional licensing, and sentencing. |
| Moot court | Educational/legal practice | US, UK, CAN | Old English moot + court, educational use | Simulated appellate argument used in legal education and practice competitions. |
| Mortgage foreclosure | Enforcement procedure | US, UK, CAN | Old French mort gage, medieval | Legal process by which a mortgagee enforces security and sells property to satisfy a defaulted loan. |
| Magistrate | Judicial officer | UK, US, CAN, AUS | Latin magistratus, medieval | A judicial officer who handles preliminary matters, minor offenses, and procedural tasks in lower courts. |
| Marketable title | Property/real estate concept | US, UK, CAN | English legal usage, modern | Title that is free from significant defects or disputes so a reasonable buyer would accept it. |
| Majority shareholder | Corporate stakeholder | US, UK, CAN | English legal usage, modern | A shareholder owning more than 50% voting power, often able to control corporate decisions. |
| Minority shareholder | Corporate stakeholder | US, UK, CAN | English legal usage, modern | A shareholder with less than majority control; rights often protected against oppressive conduct. |
| Minor | Status/age classification | US, UK, CAN | Latin minor “smaller”, historical | A person under the legal age of majority with limited contractual and legal capacities. |
| Mitigated sentence | Sentencing outcome | US, UK, CAN | English legal usage, modern | A reduced punishment reflecting mitigating factors like remorse or cooperation. |
| Mandatory minimum | Sentencing law | US, UK (some statutes), CAN | English legal usage, late 20th century | Statutorily fixed minimum sentence for certain offenses that judges must impose. |
| Mandatory injunction | Equitable remedy | US, UK, CAN | Latin mandare roots, modern | A court order requiring a party to take a specific affirmative action rather than merely to refrain. |
| Medicaid | Public insurance program | US | “Medical” + aid, 20th century statute | Federal-state program providing health coverage to low-income individuals; governed by complex statutes and regulations. |
| Medicare | Public insurance program | US | “Medical” + care, 20th century statute | Federal health insurance program for people aged 65+ and certain disabled individuals; extensively regulated. |
| Markman hearing | Patent claim construction | US (federal) | Case name Markman, 1990s doctrine | A pretrial hearing where a judge construes patent claim terms to guide infringement issues. |
| Miranda warning | Criminal procedure right | US | Case name Miranda v. Arizona, 1966 | Police advisement of right to remain silent and counsel before custodial interrogation to protect Fifth Amendment rights. |
| Ministerial act | Administrative law concept | US, UK, CAN | Latin ministerialis, medieval | A non-discretionary duty that an official must perform according to law; failure may justify mandamus. |
| Motion for new trial | Procedural remedy | US, UK, CAN | English legal usage, modern | A post-judgment request to set aside a verdict due to errors or new evidence warranting a retrial. |
| Motion to suppress | Criminal procedure | US, UK (similar) | English legal usage, modern | A request to exclude unlawfully obtained evidence from trial, often under constitutional protections. |
| Muniment of title | Property/documentary proof | UK, CAN, US (historical) | Latin munimentum “defense”, medieval | A document (deed, charter) establishing ownership or rights in real property. |
| Municipal ordinance | Local legislative act | US, UK (local bylaws) | Latin municipalis, modern | A law or regulation enacted by a municipality governing local matters like zoning, noise, and licensing. |
| Multiple punishment | Double jeopardy/penalty issue | US, UK, CAN | English legal usage, modern | The issue of imposing more than one punishment for the same offense; subject to constitutional limits. |
| Mutual recognition | EU/INT legal principle | EU, INT | English legal usage, late 20th century | Principle where jurisdictions accept each other’s regulatory judgments or judicial decisions to facilitate cross-border activity. |
Descriptions
Malfeasance
Malice
Malice aforethought
Malum in se
Malum prohibitum
Mandamus
Manslaughter
Market manipulation
Marital property
Marriage
Maritime lien
Maritime salvage
Master (judicial officer)
Material breach
Materiality
Material witness
Mediation
Mediator
Medical malpractice
Mens rea
Merger (corporate)
Merger doctrine
Merit
Mitigation
Mitigating circumstances
Mistake
Misrepresentation
Misprision
Misfeasance
Misdemeanor
Mortgage
Mortgagee
Mortgagor
Motion
Motion in limine
Motion to dismiss
Motion for summary judgment
Mootness
Municipal law
Municipality
Mutual assent
Mutual mistake
Money laundering
Money judgment
Monopolization
Moral turpitude
Moot court
Mortgage foreclosure
Magistrate
Marketable title
Majority shareholder
Minority shareholder
Minor
Mitigated sentence
Mandatory minimum
Mandatory injunction
Medicaid
Medicare
Markman hearing
Miranda warning
Ministerial act
Motion for new trial
Motion to suppress
Muniment of title
Municipal ordinance
Multiple punishment
Mutual recognition