@elaine-solomon Switching off the chat toggle under settings seems to disable the in-game chat entirely. I leave it enabled so I can say "hi", "gg" etc, and the occasional bit of friendly chat (if my opponent isn't a psycho). I generally switch to the dictionary or tools tab for most of the game so the chat isn't in my eyeline at all times. The chat tab will light up blue if there's a message (and you're on a different tab) which is a nice touch.