In-aud'i-ble, a.
a. [Prefix in, not, and audible; Fr. inaudible, It. inaudibile, Lat. inaudibilis.]
Sense 1. Not audible; incapable of being heard; as, an inaudible voice or sound.
Sense 2. Making no sound; noiseless; silent. “The inaudible and noiseless foot of time.” Shak.