ignoramus

This term carries a strong pejorative weight, often used to mock or belittle someone for a perceived lack of intelligence or education. It suggests a state of profound ignorance that is seen as embarrassing or unacceptable given the context. While it functions as a standard countable noun, it is almost exclusively used in a derogatory sense to label a person rather than to describe a state of being. It differs from "ignorant," which can be a neutral description of lacking specific knowledge, by implying a general and shameful deficiency.