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 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

The retreat also features a Himalayan salt cave, a domed meditation temple and a soundproof rage room, and programs conclude with a closing ceremony focused on future intention-setting. — Hanna Wickes, Charlotte Observer, 20 May 2026

Verb

All are one- or two-bedroom units—including three penthouses—that have soundproofed interiors, airy sitting spaces, and full kitchens. — Condé Nast, Condé Nast Traveler, 24 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