Nervous/ˈnɜːrvəs/ Definition 1 of 4Pro Tip 1/3Expectation Anxiety Used when fear of the unknown or future events causes anxiety. I'm nervous about the results; they could change everything. Pro Tip 2/3Emotion Intensity The degree varies from slight unease to intense fear. She was a bit nervous meeting his parents, but it went well. Pro Tip 3/3Non-Medical Use Commonly used in everyday situations, not related to medical conditions. Jack gets nervous before every football match.