ignorance

ignorance — noun

1. the condition of not having information or understanding about a subject, often

1.nounB2
Definition

the condition of not having information or understanding about a subject, often leading to mistakes, false beliefs, or missed opportunities

Example

Padma later regretted her ignorance of the contract's fine print after she signed it.

collocation: ignorance of [a document or text]

The investigation blamed the accident on the company's ignorance of basic safety rules.

pattern: ignorance of [rules or facts] leads to [consequence]

Common collocations
  • blissful ignorance
  • willful ignorance
  • sheer ignorance
  • plead ignorance
  • betray one's ignorance
  • keep someone in ignorance
Synonyms
  • unawareness

    less common; suggests a temporary or specific gap rather than a general lack of knowledge

  • innocence

    carries a positive or neutral tone (lack of harmful knowledge), whereas ignorance is usually negative

  • illiteracy

    narrower — specifically about inability to read and write, or lack of knowledge in a particular field

Antonyms
  • knowledge

    the direct opposite; having facts and information

  • awareness

    emphasises being conscious of a specific situation or fact

  • education

    refers to formal learning and training rather than general knowledge

Grammar Patterns

ignorance + of + noun phrase

ignorance + about + noun phrase

in ignorance of + noun phrase

Usage Note

Frequently followed by of (more common) or about to specify the topic. Used as an uncountable noun — the plural form (ignorances) is rare and not recommended for learner use.

Common Mistakes

She has many ignorances about the subject.
She has a deep ignorance of the subject.
Ignorance is uncountable and should not be used in the plural.
I am in ignorance for the rules.
I am in ignorance of the rules.
The correct preposition after 'ignorance' is 'of' or 'about', not 'for'.
Idioms

blissful ignorance

idiom

A happy state of not knowing about something that could cause worry.

Maya stayed in blissful ignorance about the surprise party plans.

Why would you leave him in blissful ignorance of the problem?

ignorance is bliss

idiom

The idea that not knowing about something prevents you from worrying about it.

Diego thinks ignorance is bliss, so he avoids the news.

Is ignorance really bliss when it comes to your health?

Word family

Synonym discussion

Sense: noun/1

Ignorance simply means lacking knowledge about a topic and usually carries a negative or critical tone. Unawareness suggests a more temporary or specific gap — you might be unaware of today's date but not ignorant of it. Innocence implies a lack of knowledge that is natural or even admirable (innocence of the world's cruelty), whereas ignorance is a failing. Illiteracy is narrower, limited to the inability to read and write or to a lack of knowledge in a specific domain (computer illiteracy). For example: 'His ignorance of the law did not excuse the fine.' vs. 'Her innocence of the scheme protected her from blame.'

ignorance ↗unawarenessinnocence ↗illiteracy

Common collocations

Nouns

Adverbs

Phrases

  • in ignorance of
  • out of ignorance
  • through ignorance
  • plead ignorance

Prepositions

Etymology

LatinFrenchEnglish

Ignorance comes from the Latin word ignorantia, meaning 'lack of knowledge'. That word is built from the prefix in- ('not') and gnarus ('knowing, aware'), which is related to the verb gnoscere ('to get to know'). The word entered English through French (ignorance) in the 13th century, carrying the same basic meaning it still has today.