兴奋 (xīngfèn) means 'excited' — a high-energy, positive state of anticipation or enthusiasm, often about a specific event or news. It focuses on the internal feeling of being thrilled, unlike 热闹 (rènao), which describes an external lively atmosphere with many people, or 激动 (jīdòng), which is a stronger, more stirred-up emotion that can include anger or being moved to tears.