Addle is a Middle English word coming from the Old English adela, meaning “liquid filth.” It's related to the German adel, meaning “mire or puddle.” In the thirteenth century, addle was used to refer to rotten eggs. Now it's used to describe a confused mind.

What is a Addlepated mean?

1 : being mixed up : confused. 2 : eccentric.

Is addled a bad word?

Simple past tense and past participle of addle. (of eggs) Bad, rotten; inviable, containing a dead embryo.