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
In places such as the United Nations, simultaneous interpreters have long worked behind soundproof glass, inconspicuous yet indispensable, enabling multilingual deliberation for people who may scarcely register their presence. Ross Benjamin, The Atlantic, 10 Nov. 2025 The brand previously told PEOPLE that the space comes insulated and the walls are also soundproof for additional privacy. Rylee Johnston, PEOPLE, 9 Nov. 2025
Verb
The brand previously told PEOPLE that the space comes insulated and the walls are also soundproof for additional privacy. Rylee Johnston, PEOPLE, 9 Nov. 2025 Plus, with anti-theft fences on the windows and flame-retardant foam panels, your tiny home is thoroughly protected, insulated, and soundproofed for day-to-day living. Camryn Dilger, Better Homes & Gardens, 8 Oct. 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 25 Nov. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!