moldy

The joke was moldy and didn't make anyone laugh.

そのジョークは陳腐で誰も笑わなかった。

The bread was moldy and had to be thrown away.

パンはカビが生えていて捨てなければならなかった。

His ideas were considered moldy by the younger generation.

彼の考えは若い世代には古臭いと見なされた。