Dead spiders are things which you hope to get rid of. However, dead spiders are nothing more than pests to sweep out the door. These are usually not thought of as very significant but you can be sure that their meaning is something to truly consider when you are having dreams about dead spiders.
Dreaming of dead spiders means that you are not worried about life's little annoyances or the big ones anymore. Spiders, like most small dream insects represent problems and annoyances that get into your life. When you are dreaming that you are being bothered by little spiders it means that you have succumbed to those annoyances, you have given up and they are finally taking you over.
This kind of defeatist attitude will end up getting you killed if you don't pay close enough attention to what you're doing. However a single dead spider or many dead large spiders can represent a certain strong negative influence being out of your life for good. Spiders are known for being tricksters and extra cunning according to legend. If you dream of a large dead spider means that if you have a cunning manipulative person in your life, they will bother you no more.