Words That Start With M: Your Scrabble Cheat Sheet

Everyone wants a magnificent mouthful of vocabulary. Whether you’re mellowing out (with word games like Scrabble or Words with Friends) or mouthing off into a megaphone, knowing more words makes you mighty. Manage your image; throw some M-words into the mix. M is the 13th letter of the alphabet, but it makes a memorable start for many momentous words! So, if you have a mind to master English vocabulary, memorize the meanings of a few words that start with the letter M. 

We’ve created this list of words for you, organized by the number of letters in each word. Many of these words have more than one meaning. For simplicity, we’ve only listed one definition for each word. Keep in mind, this word list doesn’t contain every single English word that starts with M; however, it’s a useful introduction to this very special letter.

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15-Letter Words

macrophotograph – Noun | A photo taken at close range or under magnification

maintainability – Noun | The ease with which something can be restored, repaired, or maintained

methamphetamine – Noun | A synthetic or semisynthetic compound used to treat attention deficit disorder and obesity

mistrustfulness – Noun | The feeling or attitude when one does not know whether to trust someone or something

14-Letter Words

machineability (also spelled machinability) – Noun | A mechanical engineering term for the ease with which something can be made with a cutting tool

macroevolution – Noun | Major evolutionary transition, resulting in large and complex changes

mathematically – Adverb | By means of or involving mathematics

microcircuitry – Noun | The components of a network of integrated circuits

13-Letter Words

macronutrient – Noun | Any part dietary component that is required in large quantities

maladjustment – Noun | A psychological term for motional instability or the failure to cope with the demands of society

microeconomic – Adjective | Pertaining to the branch of economics dealing with individual or particular aspects

multiplicable – Adjective | Capable of being multiplied

12-Letter Words

magnetometer – Noun | A tool for measuring magnetic forces

megakaryocyte – Noun | A large blood marrow cell that produces blood platelets 

monkeywrench – Verb | To ruin something deliberately (also spelled monkey-wrench)

monopolizing – Verb | Obtaining exclusive rights to or possession of something

11-Letter Words

macrophagic – Adjective | Pertaining to a large, phagocytic white blood cell 

marginalize – Verb | To place in an unimportant position without influence

metamorphic – Adjective | Pertaining to a change of form or structure

moneymaking – Adjective | Profitable

10-Letter Words

malignancy – Noun | The quality of being dangerous or harmful

moisturize – Verb | To make something less dry by adding moisture

mumbojumbo – Noun | Gibberish

mythmaking – Verb | Creating a legendary story

9-Letter Words

marbleize – Verb | To color or stain in imitation of marble (also spelled marbelize) 

mesmerize – Verb | To hypnotize

mollymawk – Noun | Any of various sea birds

moonquake – Noun | Seismic activity on the moon’s surface

8-Letter Words

macaroni – Noun | Pasta made into short, slender tubes

maccaboy – Noun | Snuff, especially rose-scented snuff (also spelled maccoboy)

macerate – Verb | To cause to waste away or become emaciated

mackinaw – Noun | A heavy woolen coat

maculate – Adjective | Stained, blotched

7-Letter Words

macaque – Noun | Any of a genus of Asian monkey, especially the rhesus monkey

machzor –  Noun | A Hebrew prayer book for festivals (also spelled mahzor)

maffick – Verb | To celebrate without restraint 

marquee – Noun | A canopy or signage projecting over a building entrance

6-Letter Words

madcap – Adjective | Marked by recklessness and impulsiveness

madder – Noun |  The strong red color resulting from a natural Eurasian dye

mayhem – Noun | Willful violence and disorder

mohawk – Noun | A hairstyle with shaved sides and an upright center strip

5-Letter Words

maars – Noun | Circular volcanic craters

mabes – Noun | Spherical pearls used for jewelry

macaw – Noun | Parrots from South and Central America

mafic – Adjective | Pertaining to dark-colored minerals

4-Letter Words

magi – Noun | Sorcerers

maim – Verb | To cause injury, disfigurement

malm – Noun | Chalky limestone

maxi – Adjective | A long dress or coat

3-Letter Words

maw – Noun | Throat, jaws, or stomach

mew – Noun | Stable with built-on living quarters

mho – Noun | A unit of conductance

moa – Noun | Flightless New Zealand bird, now extinct

moc – Noun | Moccasin, shoe made of soft leather

mow – Verb | To cut grass or other turf

mun- Abbreviation | Municipal 

mut – Noun | A mongrel dog (also spelled mutt)

2-Letter Words

ma – Noun | Mother

me – Pronoun | The objective case of the word I 

mu – Noun | The 12th letter of the Greek alphabet

my – Adjective | Pertaining to me or myself

By looking at this list, you may be able to identify some common prefixes. Words that start with “macro” often reference something large or long. Words beginning with “micro” involve something small. Understanding these linguistic patterns can help you to intuit what a word means, even when you don’t have a dictionary handy.

Use words that start with the letter M to make memories and amuse mere mortals. If you manage to mumble multiple messages, you may mesmerize mankind with your mythic musings. No word finder will mess with your marvelous mastery of the English language. From my to macrophotograph, you’ll be armed with the right M-word for manifold moments.


  1. https://word.tips/words-start-with/m/
  2. https://dictionary.cambridge.org/us/dictionary/english/
  3. https://www.merriam-webster.com/
  4. https://www.collinsdictionary.com/us/dictionary/english/