Mix up

to combine (substances, elements, things, etc.) into one mass, collection, or assemblage, generally with a thorough blending of the constituents.

to put together indiscriminately or confusedly (often fol. by up ).

to combine, unite, or join

to mix business and pleasure.

to add as an element or ingredient

Mix some salt into the flour.

to form or make by combining ingredients

to mix a cake; to mix mortar.

to crossbreed.

Movies .

to combine, blend, edit, etc. (the various components of a soundtrack)

to mix dialogue and sound effects.

to complete the mixing process on (a film, soundtrack, etc.)

an important movie that took months to mix.

to combine (two or more separate recordings or microphone signals) to make a single recording or composite signal.

to become mixed

a paint that mixes easily with water.

to associate or mingle, as in company

to mix with the other guests at a party.

to be crossbred, or of mixed breeding.

Boxing . to exchange blows vigorously and aggressively

The crowd jeered as the fighters clinched, refusing to mix.

an act or instance of mixing.

the result of mixing; mixture

cement mix; an odd mix of gaiety and sadness.

a commercially prepared blend of ingredients to which usually only a liquid must be added to make up the total of ingredients necessary or obtain the desired consistency

a cake mix; muffin mix.

mixer ( def. 4 ) .

the proportion of ingredients in a mixture; formula

a mix of two to one.

Informal . a mess or muddle; mix-up.

Music . an electronic blending of tracks or sounds made to produce a recording. ?

mix down, to mix the tracks of an existing recording to make a new recording with fewer tracks

the four-track tape was mixed down to stereo.

mix up,

to confuse completely, esp. to mistake one person or thing for another

The teacher was always mixing up the twins.

to involve or entangle. ?

mix it up

Slang .

to engage in a quarrel.

to fight with the fists. Also, mix it.

verb

clear up , explain , explicate

verb

addle , befuddle , bewilder , confound , derange , disorder , disorganize , disrupt , distract , disturb , dizzy , fluster , foul up * , jumble , mess up * , mistake , muddle , perplex , puzzle , snafu * , upset , mix