ignorance

noun

ig·​no·​rance ˈig-n(ə-)rən(t)s 

: the state or fact of being ignorant : lack of knowledge, education, or awareness

Ignorance of the law is no excuse for violating it.

made decisions in ignorance of [=without knowing] the true situation

Synonyms of ignorance

• unfamiliarity
• innocence
• unawareness
• cluelessness
• nescience
• obliviousness

Examples of ignorance in a Sentence

His racist attitudes were born out of ignorance.

an appalling ignorance about other cultures

Recent Examples on the Web

The danger is not ignorance, but misplaced certainty. —Tomas Chamorro-Premuzic, Forbes.com, 20 Jan. 2026

McMaster’s formulation, like Trump’s exaltation of selfishness, rests on profound ignorance of the true sources of American strength. —Robert Kagan, The Atlantic, 18 Jan. 2026

Lindvik, 27, and Forfang, 30, claimed ignorance. —Matthew Futterman, New York Times, 15 Jan. 2026

Trump’s statements reflect his ignorance of wind and solar energy and his unwillingness to learn about their importance. —Tom Zirpoli, Baltimore Sun, 13 Jan. 2026

Word History

First Known Use

13th century, in the meaning defined above

Phrases Containing ignorance

• blissful ignorance
• ignorance is bliss
• plead ignorance
• tools of ignorance

Kids Definition

ignorance

noun

ig·​no·​rance ˈig-nə-rən(t)s 

: the state or fact of being ignorant : lack of knowledge, education, or awareness