The phrase "in the pink" is often used to describe someone who is healthy or in good physical condition. However, there are several antonyms to this phrase that convey the opposite meaning. One such antonym is "under the weather," which suggests that someone is feeling unwell or is sick. Other antonyms include "out of shape," "off color," and "run down." These phrases indicate that someone is not in good physical health or is experiencing a decline in their overall well-being. It's important to remember that the opposite of "in the pink" doesn't necessarily mean that someone is suffering from a serious illness, but rather that they may be experiencing a temporary setback in their physical health.