Definition of soundproofing in US English:

soundproofing

noun

  • See soundproof

    • ‘The club room is being re-built at a cost of £250,000 with increased soundproofing, removal of all windows and relocation of speakers.’
    • ‘As a result of the renovations the club will no longer feature live music because of the cost of soundproofing and double-glazing the windows.’
    • ‘The townhouse was chosen because its cement walls provided good soundproofing.’
    • ‘His wheezing and giggling are driving me crazy and even with the soundproofing in the back room the bass from the club is making my eyes hurt.’
    • ‘Some people are talking about adjusting traffic patterns to try to help with the noise, but a more reasonable solution might be focusing on adding soundproofing to noisy areas where people live or work.’

Pronunciation

soundproofing

/ˈsoun(d)ˌpro͞ofiNG/