Not mispronounced, but mis-used, period:
reiterate
There is no such word. It is redundant. The word is "iterate". That's it. It already means to repeat, say again.
But I see everybody use "reiterate", even anchormen/women on TV stations when they give the news. You would think, of all people, journalists would be meticulous about their words. Makes you wonder if they are just as sloppy with their "facts".