dead

Flat, dull, without brilliancy, as varnish which has been rubbed so that it has little or no gloss; flat, as a coat of paint. 2. Without variety; without important features, as a blank wall. 3. Without spring or elasticity; impervious to sound, as a floor which has been made non-conducting. 4. Without motion; quiescent, as a more or less stationary load as distinguished from the load due to persons or movable furniture. 5. Without action; without independent power of motion, as a dead bolt. 6. Useless; no longer serving the original purpose, as a flue which has been closed up. 7. Not electrically connected to a source of voltage. 8. Without resonance, as a room free from echoes and reverberation. (Sturgis, 1900)