If two substances mix or if you mix one substance with another, you stir or shake them together, or combine them in some other way, so that they become a single substance.

If you mix something, you prepare it by mixing other things together.

A mix is a powder containing all the substances that you need in order to make something such as a cake or a sauce. When you want to use it, you add liquid.

A mix of different things or people is two or more of them together.

If two things or activities do not mix or if one thing does not mix with another, it is not a good idea to have them or do them together, because the result would be unpleasant or dangerous.

If you mix with other people, you meet them and talk to them. You can also say that people mix .

When a record producer mixes a piece of music, he or she puts together the various sounds that have been recorded in order to make the finished record.

If you say that someone mixes it, or in American English mixes it up, you mean that they often fight or argue strongly about things.