A word meaning "able to be muted"
The word "mutable" means changeable, rather than "able to be muted". Is there a word that carries this meaning?
Solution 1:
It is muteable. It is an uncommon word and not listed in credible dictionaries but it is in Wiktionary:
Capable of being muted.
Solution 2:
Try: mute-able.
Hyphenating allows the two to act as a single idea. This is called a compound adjective.