What does dissing mean?

Answer 1

If you diss someone it means you're hating on them, or "flaming" them, as or saying something mean about them or at least you're trying to. It is short for the slang verb (the noun is standard English) "disrespect". So if you diss someone you are showing them disrespect.

Answer 2

It's a slang term for being put down, made fun of, burned all that kinda thng, hope I helped :D its a term dat means wen someone puts you down !

Answer 3

To destroy something. To break an object into fragments and tiny bits. Another word for decay.