operetta
/ˌɒpəˈretə/noun
- a short opera, usually on a light or humorous theme and typically having spoken dialogue. Notable composers of operettas include Offenbach, Johan Strauss, Franz Lehár, and Gilbert and Sullivan.小歌剧（常有轻松幽默的主题, 对话较多; 其著名的剧作家包括奥芬巴赫、约翰·施特劳斯、弗朗茨·莱哈尔、吉尔伯特和苏利文）。
词源
late 18th cent.: from Italian, diminutive of opera （see OPERA1）.