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soundproof

1 soundproof /ˈsaʊndˌpruːf/ adjective
1 soundproof
/ˈsaʊndˌpruːf/
adjective
Britannica Dictionary definition of SOUNDPROOF
[more soundproof; most soundproof]
: not allowing sound to enter or leave
2 soundproof /ˈsaʊndˌpruːf/ verb
soundproofs; soundproofed; soundproofing
2 soundproof
/ˈsaʊndˌpruːf/
verb
soundproofs; soundproofed; soundproofing
Britannica Dictionary definition of SOUNDPROOF
[+ object]
: to make (something) soundproof