infringe
Americanverb (used with object)
verb (used without object)
verb
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(tr) to violate or break (a law, an agreement, etc)
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(intr; foll by on or upon) to encroach or trespass
Synonym Usage
See trespass.
Other Word Forms
Derived Forms
Inflected Forms
Participles
Conjugated Forms
Present
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infringesimple
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infringessimple
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have infringedperfect
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has infringedperfect
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am infringingprogressive
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are infringingprogressive
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is infringingprogressive
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have been infringingperfect progressive
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has been infringingperfect progressive
Past
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infringedsimple
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had infringedperfect
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was infringingprogressive
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were infringingprogressive
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had been infringingperfect progressive
Future
Etymology
Origin of infringe
First recorded in 1525–35; from Latin infringere “to break, weaken,” equivalent to in- in- 2 + -fringere, combining form of frangere “to break”; akin to break
Explanation
When you infringe on someone's space, time, or rights, you're getting involved in a way that is not cool. That's why, when you violate a copyright, you're said to infringe upon it. Infringe is almost always used with the prepositions "on" or "upon," as in, "if you infringe on my rights, I'll sue you." Nobody knows why that's the case. Our language is full of rules and traditions that just are the way they are. We call these phrases "idiomatic." To infringe "on" or "upon" something is one of those. You don't infringe "into" someone's conversation. You infringe "upon" it. Case closed.
Vocabulary lists containing infringe
The Bill of Rights
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List 6
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Vocabulary from The Articles of Confederation
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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.
This defense has borne fruit in other Strike 3 cases, in which defendants successfully argued simply having an IP address that was used to infringe wasn’t enough to prove they committed the infringements.
From Los Angeles Times • Jun. 18, 2026
Washington is also demanding that WTO rules do not infringe upon countries' national "security".
From Barron's • Mar. 27, 2026
GlobalFoundries is seeking compensation for lost profits and injunctive relief to bar Tower from importing or selling products that infringe on their patents.
From The Wall Street Journal • Mar. 26, 2026
Danish company Novo Nordisk asked US courts on Monday to ban Hims & Hers' range of weight-loss pills and injections, which it says are not approved by US authorities and infringe on its patent.
From BBC • Feb. 10, 2026
“This little treasure is all mine, gentlemen and ladies. Please, I beg you. Do not infringe on my discovery ” “Mr. Remorso,” said Despereaux.
From "The Tale of Despereaux: Being the Story of a Mouse, a Princess, Some Soup and a Spool of Thread" by Kate DiCamillo
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.
