There are many different words and phrases that can be used as synonyms for "nervous spirits." Some of these include jittery, anxious, edgy, tense, wired, restless, uneasy, and on edge. All of these terms describe a feeling of nervousness or apprehension, often related to anxiety or nervous energy. They can be used to describe someone who is feeling particularly nervous or anxious, or to describe a situation that is causing a great deal of stress or concern. No matter which synonym you choose, they all convey a sense of unease or tension that is common in times of stress or uncertainty.