When it comes to antonyms for the phrase "whips into shape," there are a few different options depending on context. One antonym might be "lets slide," indicating a lack of attention or care when it comes to shaping something or someone. Another antonym might be "destroys," indicating an active process of breaking something down rather than building it up. Additionally, "ignores" could be seen as an antonym, indicating a lack of interest or focus on improving something or someone. Of course, the best antonym will depend on the specific situation and what kind of opposite concept is most relevant.