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

The bottom-most level, meanwhile, is spotlighted by a soundproof movie theater, a 1,000-bottle wine cellar, and a wellness wing with a gym, a sauna, and a tranquil rock waterfall. — Wendy Bowman, Robb Report, 29 July 2026

The design of the guest rooms is equal parts retro and brutalist, while the spaces remain comfortable and, most importantly, soundproof. — Lindsey Tramuta, Travel + Leisure, 23 May 2026

Verb

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

The new stage is fully soundproofed and equipped with a technical grid and climate-control systems designed for scripted and unscripted shoots. — Emiliano De Pablos, Variety, 11 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