The following was a comment of mine on an answer on Stack Overflow:
This answer is misleading and incomplete at best. Plain wrong at worst.
My intent was to express that an indulgent interpretation will render it misleading and incomplete. A less forgiving one can go as far as saying it is just wrong.
I don't feel good about
at worst. Is it a correct way to express this? I suspect it is, but even if it is I have the feeling it doesn't sound natural to an English speaking native.