Longman Dictionary of Contemporary English - mixed up

~ adj 1 be mixed up in to be involved in an illegal or dishonest activity  (He's the last person I'd expect to be mixed up in something like this.) 2 be mixed up with to be involved with someone who has a bad influence on you  (When he left college he got mixed up with the wrong people.) 3 confused, for example because you have too many different details to remember or think about  (I get all mixed up over the money whenever I travel abroad.) 4 informal confused and suffering from emotional problems  (She's just a crazy mixed up kid.)  (- see also mix up mix1, mix­up)