Nervous is a term that often describes a feeling of worry, fear or anxiety. However, there are many other words that can be used as synonyms for this term, depending on the context. Some of the words you could use include apprehensive, jumpy, uneasy, agitated, edgy, restless, fidgety, anxious or worried. These words all have subtle differences in their meaning, but they all relate to a feeling of anxiousness or fearfulness. By using these synonyms, you can add variety and depth to your writing, and provide a more accurate description of the emotional state you are trying to convey.