soundproof

Not allowing sound through.

Japanese Meaning

防音（音を遮断し、音が通らない状態）

We installed a soundproof door to keep the street noise out.

外の騒音を防ぐために防音ドアを取り付けました。

Sense（1）

Not allowing sound through.

The contestant was placed in a soundproof booth so he could not receive help from the audience.

more soundproof

（ comparative ）

most soundproof

（ superlative ）