Inside the Universes

Words with a similar base: soundproof

'soundproof'

[soundproof.v.01] as in: insulate against noise

Examples:
Proust had his apartment soundproofed

'soundproof'

[soundproof.s.01] as in: impervious to, or not penetrable by, sound

Origins

					soundproof (English)
├── -proof (English)
└── sound (English)
    ├── sound (Middle English (1100-1500))
    ├── sounden (Middle English (1100-1500))
    │   └── sonder (Old French (842-ca. 1400))
    └── sund (Old English (ca. 450-1100))