Being French myself...
"Tais-toi" (pronounced tay-twah) is indeed the most common, neutral one when you address one person. "Taisez-vous" (tay-zay-voo) is used when you address several people, or someone you wish to be formal with. It translate into "be quiet".
Now for the ruder version of "shut up", it is "ta gueule" (pronounced tagul) for one person, "vos gueules" (pronounced vogul) for a group of people.
just say "Inf" and you have the word: Shutup!
ferme la bouche is how you say sutup
cietay (guy-eh-thay)
Silencio.
to say meatballs in french you say: boulettes
this is how you say it in french Sheila
épaule is how you say Shoulder in french
When people say "shutup", they are actually joking. People say it to be funny when they disagree about something. It sounds rude, but not. They laugh with you when they say "shutup."
uruse?
shutup you dumbbum
Tace!/Tacete!
Sow-wow!
Because we say it wrong it is suppose to be pronounced ANSWER. ok! =D shutup whateve just shutup
You simply say it, or if you want to be a little nicer say be quiet.
Devinn cállate
shutup Wu chun
Tace! (singular); Tacete! (plural)
cietay (guy-eh-thay)
You say blah blah shut up blah blah