interfere
Americanverb (used without object)
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to come into opposition, as one thing with another, especially with the effect of hampering action or procedure (often followed bywith ).
Constant distractions interfere with work.
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to take part in the affairs of others; meddle (often followed by with orin ).
to interfere in another's life.
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(of things) to strike against each other, or one against another, so as to hamper or hinder action; come into physical collision.
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to interpose or intervene for a particular purpose.
- Synonyms:
- intercede
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to strike one foot or leg against another in moving, as a horse.
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Sports.
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to obstruct the action of an opposing player in a way barred by the rules.
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Football. to run interference for a teammate carrying the ball.
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Physics. to cause interference.
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to clash; come in collision; be in opposition.
The claims of two nations may interfere.
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Law. to claim earlier invention when several patent requests for the same invention are being filed.
verb phrase
verb
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(often foll by in) to interpose, esp meddlesomely or unwarrantedly; intervene
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(often foll by with) to come between or in opposition; hinder; obstruct
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euphemistic (foll by with) to assault sexually
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to strike one against the other, as a horse's legs
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physics to cause or produce interference
Other Word Forms
Derived Forms
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interferinglyadverb
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noninterferinglyadverb
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noninterferingadjective
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interferernoun
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interferingadjective
Conjugated Forms
Present
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has interferedperfect 3rd person singular
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have interferedperfect
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have been interferingperfect progressive
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am interferingprogressive 1st person singular
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has been interferingperfect progressive 3rd person singular
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are interferingprogressive
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is interferingprogressive 3rd person singular
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interferingparticiple
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interferessingular 3rd person
Past
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had interferedperfect
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were interferingprogressive plural
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interferedparticiple
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was interferingprogressive singular
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interferedsimple
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had been interferingperfect progressive
Future
Etymology
Origin of interfere
First recorded in 1520–30; inter- + -fere (from Latin ferīre “to strike”); modeled on Middle French s'entreferir
Explanation
To interfere is to try to stop something from happening. If you get into a fight on the street, people passing by might try to interfere so no one gets hurt. Many countries resent it when other countries interfere (get involved) in their internal affairs, just as people often dislike it when others interfere in their personal affairs. In this sense interfere is the opposite of minding one's business. On airplanes you're not allowed to use cellphones because, it's said, they interfere with the plane’s navigational systems.
Vocabulary lists containing interfere
Power Prefix: inter-
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"Fears and Phobias," Vocabulary from the article
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The Adventures of Huckleberry Finn
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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.
These clusters attach to mitochondria, the structures often referred to as the "powerhouses" of cells, and interfere with their function.
From Science Daily • Jun. 8, 2026
"It's not your job to interfere into our country."
From Barron's • Jun. 6, 2026
Others are not risk-free: high doses of certain vitamins and minerals can cause toxicity, interfere with medications or produce unintended health effects.
From Science Daily • Jun. 6, 2026
Downing Street has hit out at "people trying to interfere in our democracy and seeking to stir up division", after JD Vance's comments on the murder of Henry Nowak.
From BBC • Jun. 5, 2026
As Juno’s brother he was quite aware of her way of doing things and it did not suit him to have her interfere with his sea.
From "Mythology: Timeless Tales of Gods and Heroes" by Edith Hamilton
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.
