soundproof

1 of 2

adjective

sound·​proof ˈsau̇n(d)-ˌprüf 

: 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

Adjective

Zac Taylor decides to dip into a quiet, soundproof room to talk. — Paul Dehner Jr, New York Times, 8 Sep. 2026

Cars are becoming more soundproof Today’s drivers aren’t hearing sirens, law enforcement agencies contend, because modern vehicles are adept at noise-blocking. — Andrew J. Campa, Los Angeles Times, 10 Aug. 2026

Verb

For a soundproofing client, our team uncovered that their tech was featured in Canadian courtrooms. — Expert Panel®, Forbes.com, 6 Aug. 2026

Rooms There are 187 airy, loft-style, soundproofed suites spread across 10 categories, from the entry-level premium room to the sprawling gran suites. — Condé Nast, Condé Nast Traveler, 30 July 2026

Word History

First Known Use

Adjective

circa 1878, in the meaning defined above

Verb

1919, in the meaning defined above

Rhymes for soundproof

• aloof
• behoof
• disproof
• flameproof
• foolproof
• greaseproof
• leakproof
• reproof
• bulletproof
• fireproof
• waterproof
• weatherproof

Kids Definition

soundproof

adjective

sound·​proof

ˈsau̇n(d)-ˈprüf

: designed to prevent sound from entering or leaving

soundproof verb