Student or Learner
I see all the examples for the uses of the word "unwittingly", to mean "unintentionally", appear to be completely interchangeable with the word "unintentionally".
I am told that no two words can be completely same! Is there in any context that both can not be interchanged?
"Unwittingly" specifically means not knowing about something, while "unintentionally" specifically means that the action was not deliberate.
Let's suppose that I am trying to hammer a nail into a piece of wood. I miss the nail, and hit my thumb with the hammer. I certainly did this unintentionally - but I did not do it unwittingly, as I certainly knew what the consequences of hitting my thumb with the hammer might be!
I'm not a teacher of English, but I have spoken it for (almost) all of my life....