Antonyms for the phrase "settled nerves" include words like anxiety, unease, restlessness, agitation, nervousness, and tension. When we have "settled nerves," we are calm, composed, and relaxed. However, when we experience the opposite of settled nerves, we tend to feel anxious, uneasy, and restless. These feelings can be caused by stress, fear, anticipation, and other negative emotions. Fortunately, there are many ways to soothe unsettled nerves, such as deep breathing exercises, meditation, yoga, spending time in nature, and talking to a loved one. By addressing these negative emotions head-on, we can find peace and calmness in our lives.