soundproof.
Not allowing sound through.
Meaning & usage
Not allowing sound through.
The contestant was placed in a soundproof booth so he could not receive help from the audience.
Where this word comes from
Etymology tree English sound English proof English -proof English soundproof From sound + -proof.
To make resistant to transmitting sound.
We soundproofed the room so we couldn't hear the road noises; unfortunately we couldn't hear the fire alarm either.
Where this word comes from
Etymology tree English sound English proof English -proof English soundproof From sound + -proof.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.