Fly out dictionary assistant turn it off forever

How do I turn of this most annoying help device ever invented since the little Microsoft dog was put down for being too annoying. I cannot find any way to turn it off. Or delete it from the program if you will. It pops up and to stop your input & all other typing ! How bad is that ? for in the middle of everything to be stopped, your vision blocked off with highlight a a square greay area and technology telling you one of the meanings tof ever. or run or Andy randome word

OFF OFF OFF please ? Turn it Off.

It doesn’t sound like LibreOffice. I assume you are on Windows from your reference to the dog, maybe it was hidden not put down?
Try this * Click Start menu > Settings > Time & Language > Typing and ensure that Show text suggestions when typing on the physical keyboard is switched to OFF

[Later]
There is the Thesaurus but you need to press Ctrl+F7 each time you want to use it and it is a dialogue, not a fly -out. Is it this?
ThesaurusCtrl&F7