matter

1 matter /ˈmætɚ/ noun
plural matters
1 matter
/ˈmætɚ/
noun
plural matters
Britannica Dictionary definition of MATTER
1 
[count] : something that is being done, talked about, or thought about
— often used in an ironic way to refer to a difficult or important situation or problem
2 
matters [plural] : the situation or subject that is being discussed or dealt with
3 
[noncount]
a  physics : the thing that forms physical objects and occupies space
b  : material of a particular kind
— see also back matter, front matter, gray matter, subject matter
4 
the matter — used to ask if there is a problem or to say that there is or is not a problem
— often + with
Usage The question “What's the matter?” is usually asked in a friendly way. The question “What's the matter with you?” is usually asked in an unfriendly way by someone who is annoyed or angry.

a matter of

1 
— used to refer to a small amount
2 
— used to say that one thing results from or requires another
3 
— used to explain the reason for something
4 
— used to say that something is based on opinion, taste, etc.
5 
— used to say that something is important, interesting, etc.

a matter of debate

— see 1debate

a matter of life and death

— see 1life

a matter of record

: something that is known because it has been publicly said or reported in the past

as a matter of course

— used to say that something will or should happen because it is natural, usual, or logical

as a matter of fact

— see fact

for that matter

— used with a statement that adds to a previous statement

mind over matter

— see 1mind

no matter

1 
informal — used to say that something is not important
2 
— used with what, how, when, etc., to say that something does not, will not, or should not affect something else
— see also no matter how you slice it at 2slice

the fact of the matter is

— used to emphasize a statement that follows

the truth of the matter

— used to stress the truth of a statement
2 matter /ˈmætɚ/ verb
matters; mattered; mattering
2 matter
/ˈmætɚ/
verb
matters; mattered; mattering
Britannica Dictionary definition of MATTER
not used in progressive tenses [no object]
: to be important
— often + that
— often + how, who, what, etc.