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 space also houses nine soundproof Framery phone booths, some of which are ADA-compliant. —AFAR Media, 29 Oct. 2025

Kimpton Armory Hotel — Montana The Art Deco building in Bozeman was originally constructed in 1941 to serve as the Montana National Guard’s armory, featuring 18-inch-thick walls, a rifle range, a soundproof music room and space for military vehicles. —Deirdre Bardolf, FOXNews.com, 25 Oct. 2025

Verb

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

According to the club, the structural work is complete, but improvements are being made, such as soundproofing the stadium to host concerts and installing lighting on the exterior. —Mario Cortegana, New York Times, 10 Sep. 2025

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