If another player 'mutes' you, it just means they can't see anything you write. It doesn't mean no other players can, so there's nothing to turn off (ie, if a player doesn't want to see what you write, it's not something you can override). However if a moderator or admin has muted you so no player can see your writing, the same still applies, you can't undo it.
Sounds like you might be on a server, to get around this simply log in with another minecraft account, if you don't have one then you should follow the rules on the server to get unmuted.
you kill them
Type "/mute (player name)" in the chat to unmute.
mute ** Speech impaired.
what I meant to ask was can someone invite me to minecraft realms
the mute swans prey is someone you would not think. the mute swans prey is the lion
Deaf-mute
Steve was not a random name but a memory of someone in Minecraft.
Someone would use mute math if they were trying to teach a deaf person how to do math, or even a blind person as well because they cant see the paper in front of them.
You can't. Only the admin/op/mod can unmute you. (unless you want to hack into the server console which is illegal)
ask them
blind
No. No one will hack an minecraft server because someone wants to take revenge.
Check the Minecraft Wiki. It has information there.