Mixes it up with means to blend, combine, or confuse things or ideas. The antonyms for mixes it up with include segregate, separate, distinguish, categorize, and clarify. Segregate refers to separating things or people based on particular criteria, while separate means to divide or disconnect. Distinguish means to differentiate or recognize the unique features of something, and categorize refers to arranging things into distinct groups. Clarify is about making something clear or understandable. By using these antonyms, one can communicate the opposite of what mixing it up with implies. Instead of creating chaos or confusion, one can create clarity and order.