They did not get the places right: they mixed up Chelm with Chelmno, for instance.
Man, is he mixed up in a whole lot of different stuff, from karate to Elvis impersonating to fiction writing.
How did the most American of retailers get mixed up with a hoity-toity Parisian boutique?
"My name is Andrea Frottier, and I hope you don't mind that I mixed up, but I am a compulsive ambulance chaser," I told her.
He then mixed up his own at the table—oil cut with a dash of water.
They say, Janet is mixed up 'long with a feller what painted her, over on the Hills!
Then came the image of Philip; and that horror was mixed up with whatever was most ludicrous.
Then you must be mixed up with some extraordinary proceedings!
She took it to Hattie from some feeling that she was mixed up in this thing.
Our driver, a merry fellow, called out that we must look out "not to get mixed up of a heap," and rattled at it.
1530s, back-formation from Middle English myxte (early 15c.) "composed of more than one element, of mixed nature," from Anglo-French mixte, from Latin mixtus, past participle of miscere "to mix, mingle, blend; fraternize with; throw into confusion," from PIE *meik- "to mix" (cf. Sanskrit misrah "mixed," Greek misgein, mignynai "to mix, mix up, mingle; to join, bring together; join (battle); make acquainted with," Old Church Slavonic mešo, mesiti "to mix," Russian meshat, Lithuanian maišau "to mix, mingle," Welsh mysgu). Also borrowed in Old English as miscian. Related: Mixed; mixing.
1580s, "act of mixing," from mix (v.).
(often the mix) A mixture; combination of components; medley: most important element in an auto maker's marketing mix/ I enjoy what callers bring into the mix (1959+)
To fight; mix it: Them last two babies mixed many times a month (1921+)