simple past tense and past participle of matter

(physics) The basic structural component of the universe. Matter usually has mass and volume. / (physics) Matter made up of normal particles, not antiparticles. / A kind of substance.

(intransitive) To be important. / (transitive, in negative constructions, now England regional, Caribbean) To care about, to mind; to find important.

(rare) The quality of something that matters; significance; importance.

present participle of matter

Third-person singular simple present indicative form of matter

plural of matter

(obsolete) Somewhat; slightly; a little.

Irrespective of, regardless of, in spite of.

(dated or US) It doesn't matter, it's unimportant, it doesn't make any difference.