“戏谑的”的英语？

当我们在讨论如此严肃的问题的时候，这种戏谑的言辞是不恰当的。The persiflage is not appropriate when we are discussing such serious problems.他看不透她脸上的表情,究竟她说的是认真的还是戏谑的.He could not divine what her look signified. whether she spoke in earnest or in jest....