An I.V.F. Mix-Up, a Shocking Discovery and an Unbearable Two couples in California discovered they were raising each other's genetic children. Should they switch their girls? Mix up - Definition, Meaning & Synonyms mix up · verb. assemble without order or sense. synonyms: confuse, jumble · conflate, confound, confuse. mistake one thing for another. see moresee less · verb. Mixed-up Definition & Meaning The meaning of MIXED-UP is marked by bewilderment, perplexity, or disorder : confused. How to use mixed-up in a sentence. 별안간 (Mixed Up) Mixed Up: Korman, Gordon - Books The story of two boys who are losing their memories to each other. Reef and Theo don't know what's happening to them. They'll be going about their days. MLS Mix-Up: Apologies After Wrong Player Announced as MLS Mix-Up: Apologies After Wrong Player Announced as New Signing. Celtic Forward Kyogo Furuhashi Mistakenly Linked to Atlanta United. By