Dickhead and Nitwit

Dickhead noun - Insulting terms of address for people who are stupid or irritating or ridiculous.

Nitwit and dickhead are semantically related in bastard topic. In some cases you can use "Nitwit" instead a noun "Dickhead".

Nitwit noun - A person who lacks good sense or judgment.

Dickhead and nitwit are semantically related in fool topic. Sometimes you can use "Dickhead" instead a noun "Nitwit", if it concerns topics such as bastard.