a type of performance, often involving comedy, that has not been scripted (= written) or rehearsed (= practised) before the performance The pressure of 35 minutes of improv proves too much. 即兴表演35分钟的压力实在太大了。 Some of his former students have formed two new improv troupes in the city. 他的一些以前的学生在这座城市组建了两个新的即兴表演团。