[matter of fact] {n. phr.}
Something that is really true; something that can be proved.
* /The town records showed that it was a matter of fact that the two boys were brothers./* /It is a matter of fact that the American war against England was successful./
- Often used for emphasis in the phrase "as a matter of fact".
* /I didn't go yesterday, and as a matter of fact, I didn't go all week./* /Mary wasn't wearing a blue dress. As a matter of fact, she hasn't got a blue dress./
Compare: FOR THAT MATTER, IN FACT.
Contrast: MATTER OF OPINION.