> Sorry, I'm not a native English speaker. "disingenuous " was the wrong word in that context. I meant to use it as a synonym for "unfair" and made a mistake.
This particular mistake (assuming disingenuous means a little less than it does) is not particularly uncommon among native english speakers (or on HN, at that).
FWIW:
> you called them a liar who was pretending to be stupid
The "pretending to be stupid" is not an essential part of the definition above (merely "typically by").
Finally, Merriam-Webster offers up other definitions:
lacking in candor
giving a false appearance of simple frankness
These don't fit particularly with the strident definition you're using.
English words are complex, with contextual and flexible meanings. You've picked one definition. And then you've attacked someone's integrity on the basis of it, which is exactly what you're arguing has been done to someone else. Don't be this guy.
to me, that counts as a reason to apologize