mixmix1 /mɪks/ ●●● verb 1 [intransitive, transitive] if you mix two or more substances, or if they mix, they combine to become a single substance: Oil and water don’t mix. Mix the butter and sugar together, and then add the milk. Mix the beans thoroughly with the sauce.THESAURUScombine – to join two or more things together, or to be joined together with another thing: Combine the ingredients and beat until smooth.stir – to mix a liquid or food by moving a spoon around in it: Reduce the heat and stir until thickened.blend – to mix together soft or liquid substances to form a single smooth substance: Blend the yogurt with fresh fruit for a wonderful drink.beat – to mix food together quickly and thoroughly using a fork or kitchen tool: Beat the eggs and add to the sugar mixture.2[intransitive, transitive] to combine two or more different activities, ideas, groups of things, etc.: Their music mixes jazz and rock. I don’t mix business with pleasure.3[intransitive] to enjoy meeting, talking, and spending time with other people, especially people you do not know very well: Joey mixed easily with the other children.mix up phrasal verb1mix somebody/something ↔ up to make the mistake of thinking that someone or something is another person or thing: I keep mixing him up with his brother.2mix something ↔ up to change the way things have been arranged so that they are no longer in the same order: Don’t mix up those papers, or we’ll never find the ones we need.3mix somebody up informal to make someone feel confused: Too many people were giving her advice and mixing her up. → mixed up, mix-up