Silent
Part of speech: adjective
Definition: Free from sound or noise; absolutely still; perfectly quiet. Not speaking; indisposed to talk; speechless; mute; taciturn; not loquacious; not talkative. Keeping at rest; inactive; calm; undisturbed; as, the wind is silent. Parnell. Sir W. Raleigh. (pronunciation) Not pronounced; having no sound; quiescent; as, "e is silent in fable." Having no effect; not operating; inefficient. Without audio capability.
Part of speech: noun
Definition: That which is silent; a time of silence. A silent movie
Example sentence: Journalism can never be silent: that is its greatest virtue and its greatest fault. It must speak, and speak immediately, while the echoes of wonder, the claims of triumph and the signs of horror are still in the air.
Soundless
Part of speech: adjective
Definition: without sound