mut- (silent)

1. Refraining from producing speech or vocal sounds.
2. Unable to speak or to vocalize, as certain animals.
3. Linguistics: Not pronounced, silent, as the e in the word house and mute.
4. Someone who is incapable of speech; not making any sound; silent; usually because of deafness, loss of or damage to the tongue, etc.
5. To soften the tone, color, shade, or hue of.
6. A clip pad, or other device, used to soften, deaden, or muffle the sound of a musical instrument.

1. To soften or muffle the sound of.
2. To soften the tone, color, shade, or hue of.

A reference to people who are unable to speak; being mute or deaf-mute.

1. The inability to speak.
2. A refusal to speak either at all times or on specific occasions, which may indicate trauma or stress.

Seemingly incongruous behavior in which someone exhibits a ready flow of speech in private, but silence in public.