upset (one's) applecart(redirected from upset my apple cart)
upset (one's) applecart
To ruin or interfere with one's plans or goals. Look, he's not trying to upset your applecart or anything—he just needs to meet later in the day now, that's all. I had some ideas on how they could improve things, but I didn't want to upset their applecart this late in development.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
upset the/somebody’s ˈapple cart(informal) do something that spoils a plan or stops the progress of something: Another, much cheaper hairdresser has opened next door, which has upset the apple cart.
Farlex Partner Idioms Dictionary © Farlex 2017