sound·​proof | \ ˈsau̇n(d)-ˌprüf How to pronounce soundproof (audio) \

Definition of soundproof

 (Entry 1 of 2)

: impervious to sound


soundproofed; soundproofing; soundproofs

Definition of soundproof (Entry 2 of 2)

transitive verb

: to insulate so as to obstruct the passage of sound

Examples of soundproof in a Sentence

Recent Examples on the Web: Adjective That’s the viewing room where members of the news media and N.G.O.s, as well as law students and family members of people killed on Sept. 11, watch the trial, happening in the courtroom on the other side of triple-pane, soundproof glass. Wendy Macnaughton, New York Times, "Drawing the Guantánamo Bay War Court," 27 Dec. 2019 There will also be a soundproof sanctuary room for staff to decompress, meditate or seek other de-stressing therapies. CBS News, "Chef Sean Brock says walking away from acclaimed restaurant "was an incredible gift"," 4 Dec. 2019 The teen space could include soundproof booths or gaming areas, though those concepts are much more undecided. Kaitlin Lange, Indianapolis Star, "Carmel Clay Public Library is expanding its main campus. Here's what could change.," 5 Dec. 2019 The congressman started his live interview just as the pig was entering the guest area behind what was thought to be heavy soundproof doors. Baltimore Sun Staff,, "‘Like part of my family’: A week of words for Rep. Elijah Cummings’ life of service," 25 Oct. 2019 At the far side of the courtyard, the glass wall decorated with etched angels floating above the freeway seems almost soundproof, reducing the traffic below to white noise. Los Angeles Times, "Serenity, now: Where to find a quiet spot amid the bustle of L.A.," 20 Sep. 2019 Elsewhere, a separate guest bedroom with soundproof walls tacks on 372 square feet. Jack Flemming, Los Angeles Times, "‘Luke Cage’ star Mike Colter finally sells in Studio City," 29 Aug. 2019 According to police reports, Ajayi allegedly tried in early April to hire an independent contractor to construct a secret, soundproof room beneath his front porch. Steve Helling,, "Suspect in Mackenzie Lueck Murder Charged With 19 Counts of Sexual Exploitation of Minors," 13 Aug. 2019 From there, Wixey placed them one by one in a soundproof container with minimal echo called an anechoic chamber. Lily Hay Newman, WIRED, "Hackers Can Turn Everyday Speakers Into Acoustic Cyberweapons," 11 Aug. 2019 Recent Examples on the Web: Verb More than 500 homes near the field will likely be ineligible for soundproofing, according to an analysis by the City of Madison. Patrick Marley, Milwaukee Journal Sentinel, "Lawmakers to take up bills that make lemonade stands legal, sex with animals a felony," 8 Oct. 2019 The two dining rooms are softly lit and soundproofed, thanks to carpet on the floor, linens on the tables and tufted fabric on the walls. Tom Sietsema, Washington Post, "Tom Sietsema’s 7 favorite places to eat (and drink) right now — plus one to avoid," 24 June 2019 In 1981, the FAA established DNL 65 decibels as the guideline at which federal funding is available for soundproofing, which can include new doors and windows for houses impacted by high jet noise levels. Mary Wisniewski,, "Long wait for FAA noise study raises questions: Quigley," 3 July 2019 There’s ways of soundproofing even exterior spaces. Kevin Litten,, "Should downtown New Orleans limit music venues, outdoor dining? Study could lead to guidelines," 10 June 2019 Nap York’s floors are soundproofed with upcycled tires, while white-noise machines emit a gentle hum. Ashley Mateo, WSJ, "Are $15 Nap Breaks the New Lunch Breaks?," 29 Aug. 2018 Safety and soundproofing measures are required as part of the project's approval. Erin Sauder, Elgin Courier-News, "East Dundee to get another gun range," 13 July 2018 Did the airport pay for soundproofing the homes of people living close to it? Michelle Theriault Boots, Anchorage Daily News, "Readers had lots of questions about airplane noise from the airport’s runway closure. Here are some answers.," 10 July 2018 Though the church paid to install air conditioning and has soundproofed windows in order to minimize the noise, neighbors continued to push to prohibit the church from holding any activities that weren’t church activities, Mixon told me. Alana Semuels, The Atlantic, "The Preacher Who Wanted to Save Silicon Valley’s Soul," 29 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'soundproof.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of soundproof


circa 1878, in the meaning defined above


1919, in the meaning defined above

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Time Traveler for soundproof

Time Traveler

The first known use of soundproof was circa 1878

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Statistics for soundproof

Last Updated

9 Jan 2020

Cite this Entry

“Soundproof.” The Dictionary, Merriam-Webster Inc., Accessed 21 January 2020.

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More Definitions for soundproof


How to pronounce soundproof (audio)

English Language Learners Definition of soundproof

 (Entry 1 of 2)

: not allowing sound to enter or leave



English Language Learners Definition of soundproof (Entry 2 of 2)

: to make (something) soundproof


sound·​proof | \ ˈsau̇nd-ˈprüf How to pronounce soundproof (audio) \

Kids Definition of soundproof

: capable of keeping sound from entering or escaping

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More from Merriam-Webster on soundproof

Rhyming Dictionary: Words that rhyme with soundproof

Spanish Central: Translation of soundproof

Nglish: Translation of soundproof for Spanish Speakers

Comments on soundproof

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