When a person is not calm about something, they may feel uneasy, anxious, or worried. Antonyms for the phrase "calm about" include words like anxious, uneasy, nervous, tense, restless, and agitated. These words all describe a state of discomfort or unease, which is the opposite of calmness. When we use antonyms for the word "calm about," such as the ones listed above, we're able to express a range of emotions that convey the opposite of being peaceful, centered, or relaxed. It's important to use a variety of words to express different emotions, and antonyms can help us achieve this goal.