dudadert

A dudadert is a person who doesn’t have much intelligence or imagination, and they go through life making decisions that seem to lack a lot if not all common sense. If you’ve got a brain but you don’t use it, you might be a bit of a dudadert.

Usually when you use the word dudadert, it is a less harmful way of calling someone stupid. So the definition is much the same as that word. Try to use it on your siblings since your parents don’t know the definition.