The best replacement for mute is moot.

The best alternatives to mute are rated as following:
★★★★★  moot
★★★★  moot point
★★★  dumb
★★  deaf
★  hold
★  do not disturb
★  lock rotation
★  indy
★  ants
  nonverbal
  mute
  damper
  cup mute
  straight mute

Your alternative for mute is not listed? Suggest!
Speaking about mute, one probably shouldn't forget about iphone headphones.

Other search terms related to mute and their ratings are:
★★★★★ iphone headphones
headset
You have in mind a companion for mute and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mute in all years. Click on graph for more.
mute
moot
moot point