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
The company's trains will be outfitted with comfortable, soundproof cabins for optimal sleeping. Evie Carrick, Travel + Leisure, 18 Apr. 2025 The house is made from high-quality materials, including insulated and soundproof interior walls. Toni Sutton, People.com, 29 Mar. 2025
Verb
Ultimately, the director worked with White to up the realism, with tweaks like Dewey soundproofing the classroom. Ryan Gajewski, HollywoodReporter, 6 Apr. 2025 Head to the backside of the library, where architects used glass partitioning and rammed earth to nearly soundproof the space from both Caltrain horns and the children’s area. Linda Zavoral, The Mercury News, 24 Mar. 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 May. 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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