Definitions

1. noun

a person who claims to know nothing about a particular subject, especially to avoid discussion or argument, or a person who professes ignorance, especially to avoid accountability or responsibility

“The politician was accused of being an ignoramus on the economic crisis, refusing to take responsibility for his actions.”

2. interjection

an expression used to signify that something is beyond one’s understanding or knowledge

“Ignoramus, how can anyone expect to solve this complex problem without more information?”

3. adjective

lacking knowledge or understanding, especially of a particular subject

“The teacher was an ignoramus when it came to new technology, struggling to keep up with her students.”