soundproofing sound proof • sound property · · · Info · Definitions · Characters · · soundproofing · · Text Latin · · Script 13 · · Length 3 · · Syllables Definitions · · · (verb) insulate against noise. Synonyms: soundproof. Example: "Proust had his apartment soundproofed." · · Verb Definition 1 Characters · · d latin small letter d U+0064 f latin small letter f U+0066 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075