soundproof
Americanadjective
verb (used with object)
adjective
verb
Other Word Forms
Derived Forms
Conjugated Forms
Present
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has soundproofedperfect 3rd person singular
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have soundproofedperfect
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is soundproofingprogressive 3rd person singular
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am soundproofingprogressive 1st person singular
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soundproofssingular 3rd person
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has been soundproofingperfect progressive 3rd person singular
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are soundproofingprogressive
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soundproofingparticiple
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have been soundproofingperfect progressive
Past
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had soundproofedperfect
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were soundproofingprogressive plural
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soundproofedparticiple
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soundproofedsimple
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had been soundproofingperfect progressive
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was soundproofingprogressive singular
Future
Etymology
Origin of soundproof
Explanation
When you soundproof a room, you insulate it so that less noise can be heard outside it. A musician who records albums in her apartment might soundproof the room in which she keeps her drums. If you practice playing the bagpipes daily, you might want to soundproof your house so you won't bother your neighbors. Alternately, if you record books on tape in your bedroom, you could soundproof the room so that outside noises won't interfere with your work. You can also use soundproof as an adjective: "The party was in a soundproof room in the hotel, so we could turn the music up as loud as we wanted."
Vocabulary lists containing soundproof
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.
Adjacent to the resort-style pool, is the fully soundproof studio, which comes complete with high ceilings and natural light, and can be used as a workspace, guest quarters, and more.
From MarketWatch • May 28, 2026
Its standout artifacts include Voltaire’s custom-designed gilded armchair, equipped with a writing desk and drawers, and a re-creation of the bedroom of Marcel Proust, including a piece of his famously cork-lined, soundproof walls.
From The Wall Street Journal • May 10, 2026
Hill regularly uses the space for "super fast internet, soundproof phone booths, and bouncing ideas over coffee" between members.
From BBC • Apr. 6, 2026
Each person sat in a soundproof room and focused on a fixed cross displayed on a screen.
From Science Daily • Dec. 23, 2025
It was like she didn’t even hear him, like she was in a soundproof bubble.
From "The Strangers" by Margaret Peterson Haddix
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.
