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

Going to space to experience real microgravity is like stepping into a soundproof room. —Aamir Khollam, Interesting Engineering, 22 Jan. 2026

The Atlas Real Estate property, with luxe amenities like a pool deck, rooftop lounge, fitness center and large coworking space with soundproof phone booths and meeting spaces, features 246 apartments and two retail spaces for lease. —Molly Davis, Nashville Tennessean, 29 Dec. 2025

Verb

At the Ritz Paris, soundproofed rooms and discreet service create privacy, while the hotel’s location and history keep guests immersed in the rhythms of the city just beyond Place Vendôme. —Jennifer Flowers, AFAR Media, 30 Jan. 2026

Less than two weeks after releasing Printer’s Devil, the COVID-19 lockdown began; the barely used tour backdrop still hangs over a mattress soundproofing their drum kit. —Nina Corcoran, Pitchfork, 29 Jan. 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