(adjective, verb)


1. impervious to, or not penetrable by, sound

- a soundproof room

Similar word(s): imperviable, impervious

Sentences with soundproof as an adjective:

- The contestant was placed in a soundproof booth so he could not receive help from the audience.


1. insulate against noise

- Proust had his apartment soundproofed

Definition categories: change, insulate

Sentences with soundproof as a verb:

- We soundproofed the room so we couldn't hear the road noises; unfortunately we couldn't hear the fire alarm either.