I. adjective
EXAMPLES FROM CORPUS
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Across a soundproof divider from the Kelleys will be Jenkins' witnesses: two lawyers and a woman described as his friend.
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He used the space beneath his desk as a kind of soundproof booth.
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It was a soundproof , windowless room at the end of the corridor on the second floor.
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So in 1954 Hebbs built a dark, soundproof cell at McGill University in Montreal.
II. verb
EXAMPLES FROM CORPUS
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The flat is soundproofed with 18 inches of concrete above and below.
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They also had to keep windows shut during services and soundproof the room.