Is “Soundproof” a Scrabble word?
Yes
SOUNDPROOF
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Soundproof
verb
1.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.”
adjective
1.Not allowing sound through.
“The contestant was placed in a soundproof booth so he could not receive help from the audience.”