'soundproof' definitions:
Definition of 'soundproof'
From: WordNet
adjective
Impervious to, or not penetrable by, sound; "a soundproof room"
verb
Insulate against noise; "Proust had his apartment soundproofed"
Synonyms of 'soundproof'
From: Moby Thesaurus
- airtight,
- ballproof,
- bombproof,
- bulletproof,
- burglarproof,
- corrosionproof,
- dampproof,
- fire-resisting,
- fireproof,
- flameproof,
- foolproof,
- hermetic,
- holeproof,
- impervious to,
- insulate,
- leakproof,
- noiseproof,
- proof,
- proof against,
- punctureproof,
- resistant,
- rustproof,
- shatterproof,
- shellproof,
- tight,
- waterproof,
- watertight,
- weatherproof