soundproof

1 of 2

adjective

sound·​proof ˈsau̇n(d)-ˌprüf How to pronounce soundproof (audio)
: impervious to sound

soundproof

2 of 2

verb

soundproofed; soundproofing; soundproofs

transitive verb

: to insulate so as to obstruct the passage of sound

Examples of soundproof in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
During the Cold War, sensitive compartmented information facilities, or SCIFs, were developed as windowless, soundproof rooms to hold classified conversations. Anna Mulrine Grobe, Christian Science Monitor, 8 May 2025 Photo: Interiors by Kat A soundproof music room in the basement. Adriane Quinlan, Curbed, 21 Apr. 2025
Verb
Combined with the 15 subway lines running beneath the building, the traffic in the area and the relocation of multiple Metro-North commuter train lines to Penn Station starting in 2027, soundproofing the new studios may prove a challenge. Jem Aswad, Variety, 20 May 2025 Ultimately, the director worked with White to up the realism, with tweaks like Dewey soundproofing the classroom. Ryan Gajewski, HollywoodReporter, 6 Apr. 2025 See All Example Sentences for soundproof

Word History

First Known Use

Adjective

circa 1878, in the meaning defined above

Verb

1919, in the meaning defined above

Time Traveler
The first known use of soundproof was circa 1878

Browse Nearby Words

Cite this Entry

“Soundproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/soundproof. Accessed 3 Jun. 2025.

Kids Definition

soundproof

adjective
sound·​proof
ˈsau̇n(d)-ˈprüf
: designed to prevent sound from entering or leaving
soundproof verb

More from Merriam-Webster on soundproof

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