What does ignorance mean?
Ignorance means a lack of knowledge, information, or awareness. It can describe an unfamiliarity with a subject, such as someone’s ignorance of local history, or a failure to understand obvious facts, risks, or consequences. The word frequently carries a critical or disapproving implication, suggesting that a person or institution should have known better. However, it can also be used more neutrally, especially in phrases such as “ignorance of the law” and “blissful ignorance.” In general use, ignorance is not limited to a lack of academic education; it can refer to any missing knowledge, including ignorance of social conventions, practical skills, or the consequences of an action. The term is useful because it distinguishes simple lack of information from intentional deception or deliberate refusal to learn.
nounLack of knowledge or information about something. It can also refer to a failure to recognize or understand facts, circumstances, or consequences, often with the implication that the person should have known better.
- Lack of knowledge or information about a subject, situation, or practice.
- Failure to recognize, understand, or take account of important facts or consequences, often suggesting culpability.
"His ignorance of the local customs led to an awkward misunderstanding."
"The report emphasized the widespread ignorance of the risks associated with the treatment."
"She spoke without any embarrassment about her ignorance of the theory."
Rare; the word is normally used in the singular.
"The text discusses the different ignorances that shape public opinion."
The proverb “Ignorance is bliss” captures why unfamiliarity can sometimes feel comfortable—until it becomes consequential.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does ignorance come from?
The word comes through Old French ignorantia from Latin ignorantia, meaning “ignorance” or “unknowing.” It is related to Latin ignorare, “to not know,” which is cognate with English ignore. The adjective ignorant and the verb ignore developed from the same Latin root, although their modern meanings and uses have become distinct.
Related word forms
How ignorance is actually used
The word is commonly used in a mildly critical or disapproving way when someone lacks knowledge they are expected to have. In the phrase “blissful ignorance,” it is often used playfully or sympathetically.
Easily confused with ignorance
Ignorance is a lack of knowledge or awareness, whereas negligence is a failure to exercise reasonable care and can involve knowing about a risk but neglecting to act on it.
Ignorance is a general lack of knowledge or understanding, while illiteracy specifically means inability to read or write.