illustrate
Americanverb (used with object)
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to furnish (a book, magazine, etc.) with drawings, pictures, or other artwork intended for explanation, elucidation, or adornment.
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to make clear or intelligible, as by examples or analogies; exemplify.
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Archaic. to enlighten.
verb (used without object)
verb
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to clarify or explain by use of examples, analogy, etc
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(tr) to be an example or demonstration of
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(tr) to explain or decorate (a book, text, etc) with pictures
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(tr) an archaic word for enlighten
Other Word Forms
Derived Forms
Inflected Forms
Participles
Conjugated Forms
Present
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illustratesimple
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illustratessimple
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have illustratedperfect
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has illustratedperfect
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am illustratingprogressive
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are illustratingprogressive
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is illustratingprogressive
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have been illustratingperfect progressive
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has been illustratingperfect progressive
Past
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illustratedsimple
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had illustratedperfect
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was illustratingprogressive
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were illustratingprogressive
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had been illustratingperfect progressive
Future
Etymology
Origin of illustrate
First recorded in 1520–30; from Latin illustrātus, past participle of illustrāre “to illuminate, make clear, give glory to”; see il- 1, luster 1, -ate 1
Explanation
To illustrate is to make something more clear or visible. Children's books are illustrated with pictures. An example can illustrate an abstract idea. The word illustrate comes from the Latin illustrare 'to light up or enlighten.' Pictures in a book enlighten the reader, and a good example can enlighten someone on a complex topic. Another use: The government's actions illustrate how out of touch it is with the people. The history of this word illustrates how language changes over time, and how knowing the original meaning can help you understand the word in a deeper way.
Vocabulary lists containing illustrate
Tier 2 Words for the SBAC ELA Items
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Jim Burke's Academic Vocabulary List
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The SAT: Language of the Test, List 3
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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.
Based at the site of the former Bank of Ireland building at the junction of Royal Avenue and North Street, it will use words, pictures and sounds to illustrate the city's past, present and future.
From BBC • Jul. 1, 2026
To start, “Network” makes our list of movies that illustrate frictional historical moments.
From Los Angeles Times • Jun. 29, 2026
The post is one of dozens reviewed by AFP that illustrate what conservationists call rampant illegal wildlife trafficking across social media platforms, particularly those belonging to Facebook parent company Meta.
From Barron's • Jun. 29, 2026
DuPont and GM were different enterprises, but together they illustrate a central truth: Free enterprise joined to national purpose can become a decisive strategic advantage.
From The Wall Street Journal • Jun. 26, 2026
He had also set out to illustrate Archimedes’ principle in action, and as a consequence had discovered a further anomaly, that a weight of water could lift a weight greater than itself.
From "The Invention of Science" by David Wootton
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.