* Formal: "The accountant discovered that the company's funds had been commingled with personal expenses."
* Legal: "The lawyer argued that the evidence was commingled and therefore inadmissible."
* Informal: "My laundry got commingled with my roommate's, and now I can't find my favorite socks."
* Figurative: "The artist's influences were so commingled that it was hard to separate them in her work."
Commingled means mixed together, often in a way that is inappropriate or confusing. It's frequently used in legal and financial contexts, but can also be applied to more everyday situations.