etymologeek.com dictionary
English word doodle comes from German dudel.

Doodle etymology history

Doodle detailed word origin explanation

Dictionary entryLanguageDefinition
dudel German (deu)
dudeln German (deu)
dawdle English (eng) A dawdler.. A slow walk, journey.. An easily accomplished task; a doddle. (intransitive) To move or walk lackadaisically.. (intransitive) To spend time idly and unfruitfully, to waste time.. (transitive) To spend (time) without haste or purpose.
doodle English (eng) To draw or scribble (something) aimlessly (internet) the picture or animation that a website features centrally on its front page. (obsolete) A fool, a simpleton, a mindless person.. (slang, sometimes, _, childish) Penis.. A small mindless sketch, etc.