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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:

Why it’s worth seeing: While its subject matter is disturbing, the film offers an evenhanded look at the effects of trauma on a child, and Reeves delivers an astounding performance.

From The Wall Street Journal Sep. 7, 2026

They then looked for the kind of steady signal concentrated within a very narrow frequency range that dark matter is expected to produce over long periods of time.

From Science Daily Sep. 6, 2026

But for any of that to matter, the real wins will need to come on the field.

From Los Angeles Times Sep. 6, 2026

"I expect the local Neighbourhood Team to tackle the crime and anti-social behaviour as a matter of urgency," he added.

From BBC Sep. 6, 2026

The voice in my head that’s Dad’s reminds me that it’s fine, that it doesn’t matter when we celebrate it, that it’s the thought that counts.

From "Red Flags and Butterflies" by Sheryl Azzam

Similarly, Jeon is open to using AI for more “trivial” matters, such as simultaneous translation from English to Korean and vice versa.

From Los Angeles Times Sep. 6, 2026

The BBC is not publicising the personal information shared with it, at the request of the Greens, as it relates to private family matters.

From BBC Sep. 6, 2026

"I don't think it matters what you call it. What matters is the fact we have had tremendous success. We've stopped Iran from having a nuclear weapon," he said.

From Barron's Sep. 4, 2026

Why it matters for CFOs: The deal carries significant weight for finance and other corporate leaders debating how to reduce their AI development costs, or weighing their own AI investments, capital allocation and potential acquisitions.

From The Wall Street Journal Sep. 4, 2026

You understand us when it matters, I think.

From "Invisible Inkling" by Emily Jenkins

The player many classed as the world's greatest had failed when it mattered most for him.

From BBC Aug. 31, 2026

What mattered was less that the meal satisfied any established definition of breakfast than that, sometime after waking, you had allowed yourself to be fed.

From Salon Aug. 31, 2026

Warsh’s description of how he reads the economy and what does and doesn’t concern him mattered most, said Kohn.

From The Wall Street Journal Aug. 30, 2026

But it hasn’t mattered much, because the best that a USC team has ranked defensively in that span was last year, when the Trojans gave up 23 points per game — 51st in the nation.

From Los Angeles Times Aug. 30, 2026

Like no one else mattered except me and Mom.

From "The Wrong Way Home" by Kate O’Shaughnessy

Yet overall yield levels could start mattering a lot more in markets if the 10-year Treasury yield were to top 5%.

From MarketWatch Sep. 1, 2026

"Several analysts argue that the second-quarter number itself may end up mattering less than what management says about the quarter ahead," said Axel Rudolph, a market analyst at IG.

From Barron's Aug. 26, 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

Researchers across a variety of fields view mattering as a missing pillar of well-being.

From The Wall Street Journal Jan. 17, 2026

When I join Isabella and Julia at our table, I look over where Alex stood singing, and think about getting up there and yelling about my life mattering, but I sure don’t do it.

From "A Good Kind of Trouble" by Lisa Moore Ramée

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