I know that “chalcedony” is supposed to be pronounced “kal-SED-uh-nee,” but I still want to pronounce it “CHAL-sih-doh-nee,” with the “ch” sounding like that in “chair.”
Let’s not go there. Therapy as a kid and little tricks over the years, but I still feel funny trying to say anything with that blasted letterrrr-rr in it. Giving speeches in front of crowds doesn’t bother me, but that damn thing is waiting, hidden in the most innocent of words.
My G-Grandma was from Missouri (or thereabouts) originally and introduced me to some weird pronunciations. She ahrned clothes after wershing 'em, but I don’t think that counts. Once knew a girl who spelled the nations capital “Wershington”
“Alumimum” is one I’ve heard occasionally, which I think has caused some family members to continue calling the stuff in the kitchen “tin foil”.
Fortunately, I seem to be able to pronounce the few words I do know correctly…at least as far as I know…but this thread reminds me of my 10th grade biology teacher (a very sweet and not uncute woman, btw) who couldn’t pronounce esophagus or aluminum. She tried and tried and still they came out esogophus and alunimum. 
And my late stepfather couldn’t say eucalyptus; it always came out eulypticus.
I pronounce it okay, “yoo-clid”, but whenever I see it in print, I always confuse the name Euclid with Euler, and pronounce the former in my mind as “Oy-clid”.
Anthropomorfinpisize. Anthrofopnopnize.
Attributing human-like qualities to inanimate objects. I can’t spell it, either.
Whoa, that was way weird, I saw the word “phenomenon” and got distracted singing the song a couple times… then I regained focus and read the rest of your post.
Oh. Well, you learn something new every day!
Proximety
I stumbled over it once, years ago, and it came out pro-mixety. I’ve had to be careful with it ever since.
Tiger
I can’t keep it from sounding like tagger. Very twangy, and stands out in Pittsburgh (which has its own well-documented language quirks).
Can I share a pet pronunciation peeve of mine? I want to throw things at every television weather man who talks about the current “tempichure.”
Vagabond.
According to me, one who lives an unsettled life is a “bagavond”.
I have a lot of dialect and accent related issues (horror/whore, jewelry/jury, pin/pen/peeing), but there are some phrases I just trip over every time. “Long Island Iced Tea” and “Arnold Palmer” are two.
Same here! I pronounce it the latter way as well.
Oo, this does have an alternate of kal-suh-doh-nee. So I guess the CH sound is right out. :o
Superfluous.
Oh, and my dad can’t handle “armoir”. “Yeah, we need to get an ardmore for the bedroom.”
Cute
I don’t pronounce every bit of the real word; something like tempra-chure. Is that OK?
pomegranate
I generally pronounce it with extra letters so it sounds something like pomenagranate or promengranite.
I cannot say the name of the Iranian president. There’s too many consonants or something and I can’t get my tongue wrapped around it.
Darn you. Now I’ll never be able to say that word with a straight face again.
Howard Johnson is a tough one too. Try to say that three times without losing the d.
My father was sort of proper and it used to crack me up when he pronounced Camden = Candem.
Sometimes I add a syllable to remnant for some odd reason.
Marlboro. Which is inconveniently the brand of cigarettes I smoke. I don’t really know how to even spell out the way I pronounce it, but imagine someone saying it with marbles in their mouth and that’s about it. Sometimes I end up with different cigarettes than I asked for, but I usually don’t say anything because I’m the one who can’t say the word right. Just the other day I ended up with Parliament Lights, and I actually completely understand how the guy interpreted that out of me saying “Marlboro Reds.”