- malediction: The calling down of a curse or curses.
- malefactor: One who injures another.
- maleficent: Mischievous.
- malevolence: Ill will.
- malevolent: Wishing evil to others.
- malign: To speak evil of, especially to do so falsely and severely.
- malignant: Evil in nature or tending to do great harm or mischief.
- malleable: Pliant.
- mallet: A wooden hammer.
- maltreat: To treat ill, unkindly, roughly, or abusively.
- man-eater: An animal that devours human beings.
- man-trap: A place or structure dangerous to human life.
- mandate: A command.
- mandatory: Expressive of positive command, as distinguished from merely directory.
- mane: The long hair growing upon and about the neck of certain animals, as the horse and the lion.
- maneuver: To make adroit or artful moves: manage affairs by strategy.
- mania: Insanity.
- maniac: a person raving with madness.
- manifesto: A public declaration, making announcement, explanation or defense of intentions, or motives.
- manlike: Like a man.
- manliness: The qualities characteristic of a true man, as bravery, resolution, etc.
- mannerism: Constant or excessive adherence to one manner, style, or peculiarity, as of action or conduct.
- manor: The landed estate of a lord or nobleman.
- mantel: The facing, sometimes richly ornamented, about a fireplace, including the usual shelf above it.
- mantle: A cloak.
- manufacturer: A person engaged in manufacturing as a business.
- manumission: Emancipation.
- manumit: To set free from bondage.
- marine: Of or pertaining to the sea or matters connected with the sea.
- maritime: Situated on or near the sea.
- maroon: To put ashore and abandon (a person) on a desolate coast or island.
- martial: Pertaining to war or military operations.
- Martian: Pertaining to Mars, either the Roman god of war or the planet.
- martyrdom: Submission to death or persecution for the sake of faith or principle.
- marvel: To be astonished and perplexed because of (something).
- masonry: The art or work of constructing, as buildings, walls, etc., with regularly arranged stones.
- masquerade: A social party composed of persons masked and costumed so as to be disguised.
- massacre: The unnecessary and indiscriminate killing of human beings.
- massive: Of considerable bulk and weight.
- masterpiece: A superior production.
- mastery: The attainment of superior skill.
- material: That of which anything is composed or may be constructed.
- materialize: To take perceptible or substantial form.
- maternal: Pertaining or peculiar to a mother or to motherhood.
- matinee: An entertainment (especially theatrical) held in the daytime.
- matricide: The killing, especially the murdering, of one's mother.
- matrimony: The union of a man and a woman in marriage.
- matrix: That which contains and gives shape or form to anything.
- matter of fact: Something that has actual and undeniable existence or reality.
- maudlin: Foolishly and tearfully affectionate.