Dictionary.com
Thesaurus.com

ill-informed

American  
[il-in-fawrmd] / ˈɪl ɪnˈfɔrmd /

adjective

  1. lacking adequate or proper knowledge or information, as in one particular subject or in a variety of subjects.

    The public is ill-informed of the danger.


Etymology

Origin of ill-informed

First recorded in 1815–25

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

More important, it is evidence of how astoundingly ill-informed they are about the role they play in American life and how and why it has changed so dramatically.

From The Wall Street Journal • Jun. 8, 2026

A dearth of serious reporting contributed to the public being ill-informed.

From Salon • Dec. 19, 2025

Don’t underestimate either how ill-informed he might choose to be about what’s really happening in Ukraine.

From The Wall Street Journal • Nov. 21, 2025

"A split-second, ill-informed decision can end someone's life, and leave the perpetrator facing a long jail sentence," he said.

From BBC • Jul. 11, 2025

No competent astronomer defended the traditional Ptolemaic system once they had heard that Venus had a full set of phases; you had to be an ill-informed philosopher to do so.

From "The Invention of Science" by David Wootton

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "ill-informed" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com