Soundproof has 4 different meanings across 2 categories:
Verb
· Adjective
Verb
1
insulate against noise
"Proust had his apartment soundproofed"
2
To make resistant to transmitting sound.
Adjective
1
impervious to, or not penetrable by, sound
"a soundproof room"
2
Not allowing sound through.
Broader Terms (hypernyms)