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matter

American  
[mat-er] / ˈmæt ər /

noun

matters plural
  1. the substance or substances of which any physical object consists or is composed.

    the matter of which the earth is made.

  2. physical or corporeal substance in general, whether solid, liquid, or gaseous, especially as distinguished from incorporeal substance, as spirit or mind, or from qualities, actions, and the like.

  3. something that occupies space.

  4. a particular kind of substance.

    coloring matter.

  5. a situation, state, affair, or business.

    a trivial matter.

    Synonyms:
    concern, thing
  6. an amount or extent reckoned approximately.

    a matter of 10 miles.

  7. something of consequence.

    matter for serious thought.

  8. importance or significance.

    decisions of little matter.

    Synonyms:
    moment
  9. difficulty; problem; trouble: There is something the matter with the car.

    Whatever is the matter?

    There is something the matter with the car.

  10. ground, reason, or cause.

    a matter for complaint.

  11. the material or substance of a discourse, book, etc., often as distinguished from its form.

    Synonyms:
    topic, subject, content
  12. things put down in words, especially printed.

    reading matter.

  13. things sent by mail.

    postal matter.

  14. a substance discharged by a living body, especially pus.

  15. Philosophy.

    1. that which by integrative organization forms chemical substances and living things.

    2. Aristotelianism. that which relates to form as potentiality does to actuality.

  16. Law. statement or allegation.

  17. Printing.

    1. material for work; copy.

    2. type set up.

  18. Christian Science. the concept of substance shaped by the limitations of the human mind.


verb (used without object)

matters, present (3rd person singular) mattered, past participle, past mattering present participle
  1. to be of importance; signify.

    It matters little.

    Synonyms:
    count
  2. Pathology. to suppurate.

idioms

  1. a matter of life and death, something of vital or crucial importance.

  2. for that matter, as far as that is concerned; as for that: Also for the matter of that

    For that matter, you are no better qualified to judge than I.

  3. as a matter of fact, in reality; actually; in fact.

    As a matter of fact, there is no substance to that rumor.

  4. no matter,

    1. regardless or irrespective of.

      We'll never finish on time, no matter how hard we work.

    2. it is unimportant; it makes no difference.

      No matter, this string will do as well as any other.

matter British  
/ ˈmætə /

noun

  1. that which makes up something, esp a physical object; material

  2. substance that occupies space and has mass, as distinguished from substance that is mental, spiritual, etc

  3. substance of a specified type

    vegetable matter

    reading matter

  4. thing; affair; concern; question

    a matter of taste

    several matters to attend to

    no laughing matter

  5. a quantity or amount

    a matter of a few pence

  6. the content of written or verbal material as distinct from its style or form

  7. (used with a negative) importance; consequence

  8. philosophy (in the writings of Aristotle and the Scholastics) that which is itself formless but can receive form and become substance

  9. philosophy (in the Cartesian tradition) one of two basic modes of existence, the other being mind : matter being extended in space as well as time

  10. printing

    1. type set up, either standing or for use

    2. copy to be set in type

  11. a secretion or discharge, such as pus

  12. law

    1. something to be proved

    2. statements or allegations to be considered by a court

  13. as regards that

  14. See grey matter

    1. regardless of; irrespective of

      no matter what the excuse, you must not be late

    2. (sentence substitute) it is unimportant

  15. wrong; the trouble

    there's nothing the matter

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to be of consequence or importance

  2. to form and discharge pus

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
matter Scientific  
/ mătər /
  1. Something that has mass. Most of the matter in the universe is composed of atoms which are themselves composed of subatomic particles.

  2. See also energy state of matter


matter Cultural  
  1. In physics, something that has mass and is distinct from energy. (See phases of matter.)


matter More Idioms  

    More idioms and phrases containing matter


Synonym Usage

Matter, material, stuff, substance refer to that of which physical objects are composed (though all these terms are also used abstractly). Matter, as distinct from mind and spirit, is a broad word that applies to anything perceived, or known to be occupying space: solid matter; gaseous matter. Material usually means some definite kind, quality, or quantity of matter, especially as intended for use: woolen material; a house built of good materials. Stuff, a less technical word, with approximately the same meanings as material, is characterized by being on an informal level when it refers to physical objects ( Dynamite is queer stuff ), and on a literary or poetic one when it is used abstractly ( the stuff that dreams are made on ). Substance is the matter that composes a thing, thought of in relation to its essential properties: a sticky substance.

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of matter

First recorded in 1175–1225; Middle English mater(e), materie, from Anglo-French, Old French mat(i)ere, materie, from Latin māteria “woody part of a tree, material, substance,” derivative of māter “mother”; see also mother 1

Explanation

Matter is everywhere: anything that has mass and takes up space is matter. Air? Donuts? People? Buildings? Melted butter? All of these, and much, much more, are matter. Other kinds of matter don't have a physical form, like a concern, problem, or even something that people think about, like a worrisome money matter, a personal matter, or a movie with a particular subject matter. Matter can also be a verb, meaning "to be important," as in: "Good health matters to me."

Keep Reading on Vocabulary.com

Vocabulary lists containing matter

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In a matter of weeks, she dashed off 11 short, guitar-based songs that tried to make sense of her whirlwind two years.

From BBC Jul. 24, 2026

Stripe is in talks to acquire OpenRouter, a buzzy startup that helps developers choose between artificial intelligence models, according to people familiar with the matter.

From The Wall Street Journal Jul. 23, 2026

Leavitt said that Trump had raised the matter with Saudi leaders in the past, and that it is something Trump “feels very strongly about.”

From Los Angeles Times Jul. 23, 2026

"While we will not comment on the specifics of this matter, one principle is unequivocal: any conduct that potentially threatens the safety of a protectee will not be tolerated."

From Barron's Jul. 23, 2026

No matter what I do, it’s always going to be there.

From "Split the Sky" by Marie Arnold

In its judgement, the IPT stated: "It is not in dispute that his journalism has made an important contribution to the debate on matters of importance in Northern Ireland."

From BBC Jul. 23, 2026

The pose brought him so much shame that during his press tour for “Project Hail Mary,” the Oscar nominee took matters into his own … hands.

From Los Angeles Times Jul. 22, 2026

That these molecules are easier to manufacture matters greatly for competition: Small molecules are the drugs for which generic price competition has already proved so beneficial to patients.

From The Wall Street Journal Jul. 22, 2026

More than the shelter, more than the food, "being with them and keeping them company is what matters", he said.

From Barron's Jul. 22, 2026

I chose to ignore her comments and instead kept myself focused on the important matters at hand.

From "The Detective's Assistant" by Kate Hannigan

Zhang was able to establish relationships with "whoever mattered locally - both the official side and the unofficial side", Alex says.

From BBC Jul. 13, 2026

There was also another dynamic that I think mattered.

From Salon Jul. 5, 2026

But what is accurate about the painting is of far greater interest, and it was this, to Trumbull, that mattered above all—the faces.

From The Wall Street Journal Jul. 4, 2026

Again, it mattered little with the U.S. getting that goal back three minutes later with Tillman bending a free kick from the top of the box off Vasilj’s gloved right hand and into the net.

From Los Angeles Times Jul. 2, 2026

What did matter, indeed struck most readers as the only thing that truly mattered, was that George Washington was retiring.

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

As commander-in-chief, he noted, "you are worshipped and loved by all today, not loved by everyone tomorrow, and are guilty of everything the day after tomorrow, with none of your achievements mattering".

From BBC Jul. 22, 2026

We’ll see several startling upsets in this round that won’t end up mattering, along with a disheartening number of 0-0 and 1-1 draws.

From Salon Jun. 11, 2026

But, with more than a bit of desperation, he regards his work in miniaturization as his “last chance at greatness,” greatness mattering to him a great deal.

From Los Angeles Times Apr. 8, 2026

Remove any of those, and the revenue numbers stopped mattering.

From MarketWatch Mar. 5, 2026

Nothing was happening, really, but the moment was thick with mattering.

From "An Abundance of Katherines" by John Green

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