Synonyms: soundproof
Definition: insulate against noise
Usage: Proust had his apartment soundproofed
Similar words: insulate
Definition: protect from heat, cold, or noise by surrounding with insulating material
Usage: We had his bedroom insulated before winter came
Synonyms: soundproof
Definition: impervious to, or not penetrable by, sound
Usage: a soundproof room
Similar words: imperviable, impervious
Definition: not admitting of passage or capable of being affected
Usage: a material impervious to water; someone impervious to argument