How to disable automatic spell checking in Skype

A reddit user provides the answer:

 there is a workaround for any Windows. Go to:

%userprofile%\appdata\roaming\microsoft\skype for desktop\dictionaries

Exit Skype, delete "en-US.bdic" (or whatever the name of the one you see there is), and then create a new dummy file by that name (you can right-click in Explorer, select New, and then choose Text Document--but be sure to rename it to the exact name, including extension).

Now right-click it, Properties, Security, Advanced. Disable Inheritance/Remove all inherited permissions from this object. Apply. Then OK out.

Now start Skype again and it will not be able to recreate the real dictionary file, as it otherwise would have done, and there will be no spellchecking.

All of the above, may need to be redone each time Skype upgrades.

 https://www.reddit.com/r/skype/comments/afidn4/v_834078_how_turn_off_spell_check/