Meaning of ょうだん in Japanese

もう少しやさしく意見してあげたらどうなの。一刀両断のもと切り捨てられた彼の立場も考えてよ。
Why don't you try expressing your opinion a little more gently? Think about how he feels getting told flatly that he's being cut loose.

彼女は海外の合唱団で歌わないかと誘われています。
She has been invited to sing in a choir in a foreign country.

あの宗教団体はかなりいかがわしい教義にとりつかれている。
That religious cult has got some pretty off the wall ideas.

商談に入る前に、少し雑談でもしましょう。
Shall we shoot the breeze for a while before talking business?

冗談はもうたくさんだ。
No more of your jokes, please.