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English definition of “matter”

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matter

noun  /ˈmæt̬·ər/ us  

matter noun (SITUATION)

[C] a situation or subject that is being dealt with or considered: Her arrival complicates matters even further. I think this is a matter best left to the mayor to decide.

matter noun (PROBLEM)

[U] the reason for pain or worry: What’s the matter? Why are you so upset?

matter noun (SUBSTANCE)

[U] physics physical substance in the universe [U] physics Matter is also a particular type of substance: printed matter waste matter

matter

verb  /ˈmæt̬·ər/ us  

matter verb (BE IMPORTANT)

to be important: [I] "What did you say?" "Oh, it doesn’t matter." [+ question word] It no longer mattered what happened.
(Definition of matter from the Cambridge Academic Content Dictionary © Cambridge University Press)
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