duddest

The dud firework didn't explode, so the children were disappointed.

用法提示：dud作前置形容词修饰firework，表示烟花未能引爆。

Farmers often find dud shells in their fields after the war ended.

用法提示：dud作定语修饰shells，指未爆炸的炮弹。

The bomb disposal robot picked up the dud bomb and moved it to a safe place.

用法提示：dud同样修饰bomb，表示炸弹未引爆，此处作定语。