Misunderstood ia when you thought you understood something but accidentally did not. Disunderstood is when you understood something but pretend that you didn’t.
Like Venator said, misinformation is where someone spreads false information that they incorrectly believed was true. Disinformation is when someone spreads false information that they know is false with the intent to deceive.
This would be disinformation.
Is there an intuitive way to tell the difference?
I tried to think of other places where dis- vs mis- is used, but we only ever seem to use one:
discommunicatemisinterestedvs disinteresteddisunderstoodMisunderstood ia when you thought you understood something but accidentally did not. Disunderstood is when you understood something but pretend that you didn’t.
Like Venator said, misinformation is where someone spreads false information that they incorrectly believed was true. Disinformation is when someone spreads false information that they know is false with the intent to deceive.