Muteness is a speech disorder in which a person cannot speak. The umbrella term "speech-impaired" is sometimes also used, though just as "visually impaired" does not necessarily ...
mute (mūt) 1. unable to speak. 2. to muffle or soften a sound. mute (my t) adj. Unable or unwilling to speak. n. One who does not have the faculty of speech.
mute (my t) adj. mut·er, mut·est. 1. Refraining from producing speech or vocal sound. 2. a. Often Offensive Unable to speak. b. Unable to vocalize, as certain animals.