Remove Copilot from Word

So annoying, frustrating and everything else that Co-Pilot was added as a default and it's difficult to figure out how turn it off!

I did not ask for this copilot nonsense, I object to being part of your experiment without proper consultation

Yes indeed, Tony Barry2, there is no guarantee that this information will be kept confidential, given that MS has behaved in this way already, and already enforced AI upon us Office users without our consent.

The era of Big Brother is already here and in action.

I'm in Malaysia and the check box has now appeared. This project was definitely rolled out by Microsoft with inadequate thought.
Now I have a more fundamental concern:
The check box states that I am "disable"'ing Copilot.
But of course all the code is still there on my computer.
So what guarantee do I have that the AI core is not scanning everything I am doing on my computer and reviewing/learning from it, EVEN THOUGH the interface to my work screen is disabled.
Like many users I deal with confidential information which should not be capable of being read outside my office except by my permission. Say I am drafting a contract for some project, and the name of the project, and the preliminary estimate of the cost of the project, are in my documents. If CoPilot has "scanned and learned" from my document and someone else asks CoPilot: "What will be the cost of the XX Project", they can give a figure gleaned from my document.
Microsoft should provide a legal statement to the effect that CoPilot when disabled is unable to access any information on a client computer.

I'm in America using a copy in English. How can I check if that's true or where that language icon came from?