up
to change the order or arrangement of a group of things, especially by mistake or in a way that you do not want :
Someone has mixed up all the application forms.
—related noun mix-up
SYN muddle
up
to change the order or arrangement of a group of things, especially by mistake or in a way that you do not want :
Someone has mixed up all the application forms.
—related noun mix-up
SYN muddle
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005