бессловесный

Etymology
From. Synchronically, based on. Diachronically, is the original stem of, which was originally an s-stem. Compare.

Adjective

 * 1) mute unable to speak
 * 2) silent
 * 3) wordless
 * 4) meek, humble, lowly
 * 1) wordless
 * 2) meek, humble, lowly