Any words that you simply CANNOT speak.

[Yopaz]

hentriacontacyclo[29.29.0.02,24.03,12.04,59.05,10.06,58.07,55.08,53.09,21.011,20.013,18.015,30.016,28.017,25.022,52.023,50.026,49.027,47.029,45.032,44.033,60.034,57.035,43.036,56.037,41.038,54.039,51.040,48.042,46]hexaconta-1,3,5(10),6,8,11(18),14,16,19,21,23,25,27,29(45),30,32(44),33,35(43),36,38(54),-39(51),40(48),41,46,49,52,55,57,59-triacontaene

Or buckministerfullerene if you want the short version.

 

[DJ_DEnM]

Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

Want to see your text-to-speech say that!

 

[Retal19]

Just about every word. I have this weird thing where I'll sometimes stumble on any word, any word at all in the middle of a sentence, usually because my brain has just processed a better word or noticed a grammatical error, so my conversations can end up like this:
"But yeah, you see he was spri-..."
"He was what?"
"Uh... he was... fuck I've forgotten how to talk."
"Again?"
"Yeah..."

 

[Cap'n Ninja]

Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch. The longest place name in the UK.

Really?
Just a little bit of work means you can do it. You only need to learn a bit at a time.
Llan-vire
Pool-gwyn
Gill-goger-ichwin
Drobwyll-llan-tsylio
Go-go-goch

Obviously there's the matter of a double l being the equivalent sound of coughing up a hairball, but that's the only hard part.

OT: I don't think there's anything much I have trouble saying. If I'm tired I'll read long words as something that sounds similar but makes no sense, but otherwise I'm pretty good.

 

[Shakomaru]

Biophosphodoradellacrystalluminesence. Well, that and pretty much any swears. I can say the former with practice.

 

[JaceArveduin]

I have to concentrate to say Kaminoan XD Something about that accursed word always gets garbled somewhere if I'm not trying to say it.

 

[holy_secret]

Pretty much the title. Today I noticed while studying for a test that I can't say the word 'Massachusetts.' Keeps coming out as 'Massa-two-shits' for some bizzare reason.

This. Dear god this. Massachushits.
And exchange. It comes out as ekshange. Gah this word is just too damn difficult for me to pronounce.

In German, I have a prob saying Spezifisch. It's supposed to be pronounced like "shpetseefish", but I always manage to butcher it into "spetsheefish" or something similar to that display of failure.

 

[ObliviousGenius]

Stethoscope, I can never EVER say that damn word right.

I always end up saying stethethscope, and I end up stopping and trying to say it right before giving up.

That word is the devil to me.

The same, only I say, "stethsocope." Spent a whole evening driving myself crazy getting it out while my friend peed herself laughing. And usually I'm so articulate, too. (Famous last words, those are.)

But I thought that the Lit major would like to know that cinnamon and synonyms aren't synonyms. They're semi-homophones.

 

[The White Light]

Nebraska. I always pronounce it as "New Braska"

 

[soren7550]

Epitome. But that's partly just to annoy my boyfriend. I keep pronouncing it 'ep a tone'.

 

[Fiz_The_Toaster]

Stethoscope, I can never EVER say that damn word right.

I always end up saying stethethscope, and I end up stopping and trying to say it right before giving up.

That word is the devil to me.

The same, only I say, "stethsocope." Spent a whole evening driving myself crazy getting it out while my friend peed herself laughing. And usually I'm so articulate, too. (Famous last words, those are.)

But I thought that the Lit major would like to know that cinnamon and synonyms aren't synonyms. They're semi-homophones.

I know a friend of mine always tries to get me to say it because he knows I can't say it right all because one time I completely stuttered and ruined the word trying to say it right the first time.

Evil evil man.

 

[Lerasai]

I can't think of any words I'm unable to pronounce. Although I'm sure that there are some which I mispronounce due to having read them and never hearing them.

Exactly what I was going to say.

Whenever there's a word I've read but not heard I hesitate to use it since how you may think it is pronounced from what it looks like can be drastically different from how people actually say it. And then there are those words that no one seems able to agree on the pronunciation of!

Sometimes I think it would be best to just save myself the embarrassment and never speak. I shall communicate solely through interpretive dance.

 

[sarahvait]

My mom has a problem with embedded Ls, so she'll pronounce golf and wolf like woof and gohf. Apparently it hurts her throat or something to say it correctly.

 

[StarsintheBlood]

None come to mind, but I once did have insane difficulty saying "dyslexia", oddly enough. Even after fifteen desperate attempts, I could not get it right and gave up. I think I can say it now, but it was quite odd.

 

[SSoSFAGTiaCaGwaP]

I can't say domino without thinking carefully. It always comes out don-i-mo.

 

[Loves2spooge]

Oh and the classic "Aluminium", its not alooominuum, its al-u-min-ium.

Actually, it's nothing to do with pronounciation, it's spelled "Aluminum" in the US.

As for a word I can't say, I can't pronounce 'rural' for the life in me. I'm British, but I don't have any definable region to my accent, but for some reason when I say it, it just sounds like "rrrul".