Synonyms for Mute (same or very similar meaning)
WordNet sense 1 (a deaf person who is unable to speak):
deaf-mute, deaf-and-dumb person
WordNet sense 2 (deaden (a sound or noise), especially by wrapping):
damp, dampen, dull, muffle, tone down
WordNet sense 3 (lacking power of speech):
tongueless
WordNet sense 4 (not capable of or especially not involving speech or spoken lines):
nonspeaking, walk-on
WordNet sense 5 (expressed without speech; especially because words would be inappropriate or inadequate):
unspoken, wordless
WordNet sense 6 (unable to speak because of hereditary deafness):
dumb, silent
WordNet sense 7 (without or deprived of the use of speech or words):
unarticulate
From the ODE community, based on WordNet
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