Ignoramus

/ˌɪɡ.nəˈreɪ.məs/

Meaning & Definition

noun
A person who is ignorant or lacks knowledge, often used in a derogatory sense.
He called her an ignoramus for not knowing the name of the famous author.
A term used to describe someone who is foolish or lacking in understanding.
Don't be such an ignoramus; read the instructions before attempting to assemble the furniture.
An insensitive or uneducated person.
The politician's comments revealed him to be an ignoramus about the issues facing the community.

Etymology

Latin 'ignoramus', meaning 'we do not know'.

Common Phrases and Expressions

know-nothing
A person who is ignorant or uninformed.
clueless
Lacking understanding or awareness.
head in the sand
Referring to someone who refuses to recognize a situation.

Related Words

ignorance
The state of being uninformed or lacking knowledge.
ignorant
Lacking knowledge, information, or awareness about something.

Slang Meanings

No-brainer
That decision was a no-brainer for an ignoramus.
Dunce
Don't be such a dunce, open your mind.