witticism的复数形式怎么写

Both doctor and Don smiled at this witticism.大夫本人和老头子都对这样的打趣发笑了.He tries to lighten his lectures with an occasional witticism.他有时想用俏皮话使课堂活跃.His witticism was as sharp as a marble.他的打趣话十分枯燥无味....

witticism的音标：witticism的英式发音音标为：['wɪtɪsɪzəm]witticism的美式发音音标为：['wɪtɪˌsɪzəm]...

n.妙语，俏皮话...